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O-Ring JISB2401 G Series (for Fixing) (Part Numbers)

Annular packing with an O-shaped (circular) cross section that can be used as a seal for a wide variety of fluids such as oil, water, air, and gas.
[Features]
·Features unique mix design, and designed materials also conform to JIS standard.
·Manufactured under consistent quality management system ranging from raw materials to products.
· Evaluation and analysis capabilities based on well-equipped testing facilities.
·In order to maintain the same sealing performance over a long period of time, the manufacturer selects materials and dimensions suitable for the usage conditions.
[Applications]
·Available for fixing and dynamic applications. If not suitable for usage conditions, cutting, swelling, pressing crack, etc., will occur.

(i)Caution

The product images are representative only. Specifications may vary by part number, including shape and color.
Items without parentheses are black.

Part Number

Configured Part Number is shown.

Drawing/Specifications
Part Numbers
Catalog

Drawing

O-ring

For cylindrical surface mount

For Flat Surface Mount

Groove shape: No backup ring

Groove shape: Backup ring on one side (only for dynamic and cylindrical surface mount)

Groove shape: Backup ring on both sides (only for dynamic and cylindrical surface mount)

(Note) The chamfer finish is based on NOK's recommended value.

Product Specification

Material	JIS symbol	NBR-70-1	NBR-90	NBR-70-2	VMQ-70	FKM-70
	Old JIS symbol	Class 1 A	Class 1 B	Class 2	Class 4C	Class 4D
	NOK symbol	A305	A105	A122	S503	F201

Specifications Table

Part number							JIS dimension identification code		O-ring dimensions
Type Dimension code	Material code					* In the *, please enter the material code on the left	[Reference] old JIS nominal number	Thickness W	Inner diameter d0	Tolerance of inner diameter d0			Composite burr dimension f
	NBR-70-1	NBR-90	NBR-70-2	VMQ-70	FKM-70					A305 (NBR-70-1) A105 (NBR-90) A122 (NBR-70-2)	S503 (VMQ-70)	F201 (FKM-70)
	Class 1 A A305	Class 1 B A105	Class 2 A A122	Class 4C S503	Class 4D F201					A305 (NBR-70-1) A105 (NBR-90) A122 (NBR-70-2)	S503 (VMQ-70)	F201 (FKM-70)
CO00200	A	B	C	L	R6	OR * G25-N	G25	3.1 +/- 0.1	24.4	+/- 0.25	+/- 0.37	+/- 0.3	0.12 or less
CO00201					U0	OR * G30-N	G30		29.4	+/- 0.29	+/- 0.43	+/- 0.34
CO00202					U2	OR * G35-N	G35		34.4	+/- 0.33	+/- 0.49	+/- 0.39
CO00203					U2	OR * G40-N	G40		39.4	+/- 0.37	+/- 0.55	+/- 0.44
CO00204					U2	OR * G45-N	G45		44.4	+/- 0.41	+/- 0.61	+/- 0.49
CO00205					U0	OR * G50-N	G50		49.4	+/- 0.45	+/- 0.67	+/- 0.54
CO00206					R8	OR * G55-N	G55		54.4	+/- 0.49	+/- 0.73	+/- 0.58
CO00207					U0	OR * G60-N	G60		59.4	+/- 0.53	+/- 0.79	+/- 0.63
CO00208					Q6	OR * G65-N	G65		64.4	+/- 0.57	+/- 0.85	+/- 0.68
CO00209					U2	OR * G70-N	G70		69.4	+/- 0.61	+/- 0.91	+/- 0.73
CO00210					U2	OR * G75-N	G75		74.4	+/- 0.65	+/-0.97	+/- 0.78
CO00211					U2	OR * G80-N	G80		79.4	+/- 0.69	+/- 1.03	+/- 0.82
CO00212					Q1	OR * G85-N	G85		84.4	+/- 0.73	+/- 1.09	+/- 0.87
CO00213					U2	OR * G90-N	G90		89.4	+/- 0.77	+/- 1.15	+/- 0.92
CO00214					U2	OR * G95-N	G95		94.4	+/- 0.81	+/- 1.21	+/-0.97
CO00215					U2	OR * G100-N	G100		99.4	+/- 0.85	+/- 1.27	+/- 1.02
CO00216					U2	OR * G105-N	G105		104.4	+/- 0.87	+/- 1.30	+/- 1.04
CO00217					U2	OR * G110-N	G110		109.4	+/- 0.91	+/-1.36	+/- 1.09
CO00218					U2	OR * G115-N	G115		114.4	+/- 0.94	+/- 1.41	+/- 1.12
CO00219					R0	OR * G120-N	G120		119.4	+/- 0.98	+/- 1.47	+/- 1.17
CO00220					U2	OR * G125-N	G125		124.4	+/- 1.01	+/- 1.51	+/- 1.21
CO00221					U2	OR * G130-N	G130		129.4	+/- 1.05	+/- 1.57	+/- 1.26
CO00222					U2	OR * G135-N	G135		134.4	+/- 1.08	+/- 1.62	+/- 1.29
CO00223					X0	OR * G140-N	G140		139.4	+/- 1.12	+/- 1.68	+/- 1.34
CO00224					U2	OR * G145-N	G145		144.4	+/- 1.16	+/- 1.74	+/- 1.39
CO00225	A	B	C	L	U3	OR * G150-N	G150	5.7 +/- 0.13	149.3	+/- 1.19	+/- 1.78	+/- 1.42	0.16 or less
CO00226					U3	OR * G155-N	G155		154.3	+/- 1.23	+/- 1.84	+/- 1.47
CO00227					U3	OR * G160-N	G160		159.3	+/- 1.26	+/- 1.89	+/- 1.51
CO00228					U3	OR * G165-N	G165		164.3	+/- 1.30	+/- 1.95	+/- 1.56
CO00229					U3	OR * G170-N	G170		169.3	+/- 1.33	+/- 1.99	+/- 1.59
CO00230					U3	OR * G175-N	G175		174.3	+/- 1.37	+/- 2.05	+/- 1.64
CO00231					W0	OR * G180-N	G180		179.3	+/- 1.40	+/- 2.10	+/- 1.68
CO00232					U3	OR * G185-N	G185		184.3	+/- 1.44	+/- 2.16	+/- 1.72
CO00233					U3	OR * G190-N	G190		189.3	+/- 1.47	+/- 2.20	+/- 1.76
CO00234					U3	OR * G195-N	G195		194.3	+/- 1.51	+/- 2.26	+/- 1.81
CO00235					U3	OR * 200 G-N	G200		199.3	+/- 1.55	+/- 2.32	+/- 1.86
CO01968*		-	-	-	H0	OR * G205-N*	G205*		204.3	+/- 1.58	-	+/- 1.90
CO00236		B	C	L	V0	OR * G210-N	G210		209.3	+/- 1.61	+/- 2.41	+/- 1.93
CO03303*		-	-	-	O0	OR * G215-N*	G215*		214.3	+/- 1.65	-	+/- 1.98
CO00237		B	C	L	U3	OR * G220-N	G220		219.3	+/- 1.68	+/- 2.52	+/- 2.01
CO02011*		-	-	-	P0	OR * G225-N	G225*		224.3	+/- 1.71	-	+/- 2.05
CO00238		B	C	L	U3	OR * G230-N	G230		229.3	+/- 1.73	+/- 2.59	+/- 2.07
CO02031*		-	-	-	O0	OR * G235-N*	G235*		234.3	+/- 1.78	-	+/- 2.14
CO00239		B	C	L	U3	OR * G240-N	G240		239.3	+/- 1.81	+/- 2.71	+/- 2.17
CO02060*		-	-	-	G0	OR * G245-N*	G245*		244.3	+/- 1.85	-	+/- 2.22
CO00240		B	C	L	U3	OR * G250-N	G250		249.3	+/- 1.88	+/- 2.82	+/- 2.25
CO02079*		-	-	-	H0	OR * G255-N*	G255*		254.3	+/- 1.91	-	+/- 2.29
CO00241		B	C	L	U3	OR * G260-N	G260		259.3	+/- 1.94	+/- 2.91	+/- 2.32
CO06543*		-	-	-	H0	OR * G265-N*	G265*		264.3	+/- 1.98	-	+/- 2.38
CO00242		B	C	L	U3	OR * G270-N	G270		269.4	+/- 2.01	+/- 3.01	+/- 2.41
CO02100*		-	-	-	H0	OR * G275-N*	G275*		274.3	+/- 2.04	-	+/- 2.45
CO00243		B	C	L	U3	OR * G280-N	G280		279.3	+/- 2.07	+/- 3.10	+/- 2.48
CO03210*		-	-	-	H0	OR * G285-N*	G285*		284.3	+/- 2.11	-	+/- 2.53
CO00244		B	C	L	U3	OR * G290-N	G290		289.3	+/- 2.14	+/- 3.21	+/- 2.56
CO06566*		-	-	-	P0	OR * G295-N	G295*		294.3	+/- 2.17	-	+/- 2.60
CO00245		B	C	L	U3	OR * G300-N	G300		299.3	+/- 2.20	+/- 3.30	+/- 2.64
CO01137*		-	-	-	G0	OR * G305-N*	G305*		304.3	+/-2.24	-	+/- 2.69
CO02158*						OR * G310-N*	G310*		309.3	+/-2.27		+/-2.72
CO08811*						OR * G315-N*	G315*		314.3	+/- 2.30		+/- 2.76
CO02176*						OR * G320-N*	G320*		319.3	+/- 2.33		+/- 2.80
CO08812*						OR * G325-N*	G325*		324.3	+/- 2.36		+/-2.83
CO08813*						OR * G330-N*	G330*		329.3	+/- 2.39		+/- 2.87
CO08814*						OR * G335-N*	G335*		334.3	+/- 2.42		+/- 2.90
CO02206*						OR * G340-N*	G340*		339.3	+/- 2.45		+/- 2.94
CO02216*						OR * G345-N*	G345*		344.3	+/- 2.48		+/- 2.98
CO02223*						OR * G350-N*	G350*		349.3	+/- 2.51		+/- 3.01
CO08815*						OR * G355-N*	G355*		354.3	+/- 2.54		+/- 3.05
CO02244*						OR * G360-N*	G360*		359.3	+/- 2.57		+/- 3.08
CO08816*						OR * G365-N*	G365*		364.4	+/- 2.60		+/- 3.12
CO08817*						OR * G370-N*	G370*		369.3	+/- 2.63		+/- 3.16
CO08818*						OR * G375-N*	G375*		374.3	+/- 2.67		+/- 3.20
CO02272*						OR * G380-N*	G380*		379.3	+/- 2.70		+/- 3.24
CO08819*						OR * G385-N*	G385*		384.3	+/- 2.73		+/- 3.28
CO02287*						OR * G390-N*	390 G*		389.3	+/- 2.77		+/- 3.32
CO08820*						OR * G395-N*	G395*		394.3	+/- 2.79		+/- 3.35
CO02301*						OR * G400-N*	G400*		399.3	+/- 2.82		+/- 3.38
CO08821*						OR * G405-N*	G405*		404.3	+/- 3.00		+/- 3.60	0.16 or less
CO08822*						OR * G410-N*	G410*		409.3
CO02336*						OR * G415-N*	G415*		414.3
CO08823*						OR * G420-N*	G420*		419.3
CO02358*						OR * G425-N*	G425*		424.3
CO08824*						OR * G430-N*	G430*		429.3
CO08825*						OR * G435-N*	G435*		434.3
CO08826*						OR * G440-N*	G440*		439.3
CO08827*						OR * G445-N*	G445*		444.3
CO02417*						OR * G450-N*	G450*		449.3
CO08828*						OR * G455-N*	G455*		454.3	+/- 3.30		+/- 4.00	0.16 or less
CO02441*						OR * G460-N*	G460*		459.3
CO06715*						OR * G465-N*	G465*		464.3
CO02460*	OR * G470-N*					G470*	469.3
CO08829*	OR * G475-N*					G475*	474.3
CO08830*	OR * G480-N*					G480*	479.3
CO08831*	OR * G485-N*					G485*	484.3
CO08832*	OR * G490-N*					G490*	489.3
CO08833*	OR * G495-N*					G495*	494.3
CO08834*	OR * G500-N*					G500*	499.3

The JIS dimension identification code represents model + material standard + dimension standard + class of product appearance.
For nominal numbers with *, the rubber materials are limited to A305 and F201 only.
JASO also has the same dimensions, and has class 3 (SBR material), class 4 E, class 5, and H materials.

JIS nominal number	Groove section dimensions
	d Dimension		D dimension		G dimension (tolerance	+0.25 0	)	H Dimension	R dimension	Max misalignment (TIR) of D and d for cylindrical surface mount and dynamic
	Dimensions	Tolerance	Dimensions	Tolerance	No backup ring	Backup ring on one side	Backup ring on both sides	H +/- 0.05	Maximum value
G25	25	0 -0.10	30	+0.10 0	4.1	5.6	7.3	2.4	0.7	0.08
G30	30		35
G35	35		40
G40	40		45
G45	45		50
G50	50		55
G55	55		60
G60	60		65
G65	65		70
G70	70		75
G75	75		80
G80	80		85
G85	85		90
G90	90		95
G95	95		100
G100	100		105
G105	105		110
G110	110		115
G115	115		120
G120	120		125
G125	125		130
G130	130		135
G135	135		140
G140	140		145
G145	145		150
G150	150	0 -0.10	160	+0.10 0	7.5	9.0	11.5	4.6	0.8	0.10
G155	155		165
G160	160		170
G165	165		175
G170	170		180
G175	175		185
G180	180		190
G185	185		195
G190	190		200
G195	195		205
G200	200		210
G205	205		215
G210	210		220
G215	215		225
G220	220		230
G225	225		235
G230	230		240
G235	235		245
G240	240		250
G245	245		255
G250	250		260
G255	255		265
G260	260		270
G265	265		275
G270	270		280
G275	275		285
G280	280		290
G285	285		295
G290	290		300
G295	295		305
G300	300		310
G305	305		315
G310	310		320
G315	315		325
G320	320		330
G325	325		335
G330	330		340
G335	335		345
G340	340		350
G345	345		355
G350	350		360
G355	355		365
G360	360		370
G365	365		375
G370	370		380
G375	375		385
G380	380		390
G385	385		395
390G	390		400
G395	395		405
G400	400		410
G405	405		415
G410	410		420
G415	415		425
G420	420		430
G425	425		435
G430	430		440
G435	435		445
G440	440		450
G445	445		455
G450	450		460
G455	455		465
G460	460		470
G465	465		475
G470	470	480
G475	475	485
G480	480	490
G485	485	495
G490	490	500
G495	495	505
G500	500	510

Selection Support

O-Ring Selection Method

An O-ring is an annular packing with an O-shaped (circular) cross section, and is generally fitted in a groove and compressed appropriately to seal a wide variety of fluids such as oil, water, air, and gas.
Available for fixing and dynamic applications. If not suitable for usage conditions, cutting, swelling, pressing crack, etc., will occur.
In order to maintain the same sealing performance over a long period of time, it is necessary to select materials and dimensions suitable for the usage conditions.

When making a selection, it is necessary to consider the contents of Table 1-1.

Table 1-1

Items	Catalog page	Purpose
a Operating temperature	8	Materials selection
b Object to be sealed	9	Materials selection
c Pressure magnitude	15	Selection of material hardness. Necessity of backup ring.
d Instructions (for dynamic/fixing)	22 to 59, 64	For fixing: JIS P/G/V series, NOK S/SS series, AS568 series, former JASO series, ISO equivalent series, WEX series, NOK polyurethane elastomer material P/G series, SP treatment O-ring series

Model number display

When ordering, specify (1) the JIS dimension identification code and (2) the NOK part number.

Example 1) If you want to purchase NBR-70-1 material with an inner diameter of 24.4 and a thickness of 3.1

JIS dimension identification code: OR NBR-70-1 G25-N
NOK part number: CO 00200 A

Example 2) If you want to purchase FKMI-70 material with an inner diameter of 24.4 and a thickness of 3.1

JIS dimension identification code: OR FKM-70 G25-N
NOK part number: CO 00200 R6

Cautions and Prohibitions

Precautions for storage and storage period

Please note the following points when storing O-rings.

Do not open the package unnecessarily. Contaminant or dust may stick to it, or it may be scratched.
When storing a product that has been opened, be careful not to let contaminant or dust adhere to it or mix it in, or scratch it.
Store it in a place away from direct sunlight with low humidity. Ultraviolet ray and moisture can accelerate the deterioration and dimensional changes of rubber materials.
Do not place it near high temperature heat sources (boilers, stoves, etc.). Heat can accelerate the deterioration of rubber materials.
Do not hang the O-ring on a nail, steel wire, etc., or hang it on a string, as this may cause the O-ring to deform.
Nitrile rubber (NBR) and styrene-butadiene rubber (SBR) may develop ozone cracks (cleavage-like cracks across the entire O-ring surface) when stored in an open or otherwise exposed state to the air.
In particular, avoid storing in the following conditions, as it will accelerate the occurrence of such cracks.
Storing near electric motors (copy machines, etc.) that generate ozone easily.
Storing of the product while it is stretched. (This includes storing with the O-ring installed.)

Storage period

Product	Material	Storage period
Single rubber product	Nitrile rubber (NBR)	10 years
	Silicone rubber (VMQ)	20 years
	Fluoroelastomer (FKM)	20 years

The storage period are for products that are stored indoors in standard packaging, away from direct sunlight, high temperatures, and high humidity.

Behind the Scenes

NOK has established the Shonan Development Center to further reinforce the material technologies it has cultivated over many years.
NOK believes that this center can conduct more comprehensive basic research than ever before, and that the company has established a system that enables it to develop materials that meet an even greater variety of uses and requirements.
In addition, NOK is expanding internationally through its global branches and also completely rebuilt Kumamoto Plant, the hub of the O-ring production in April 2007,
with the aim of making a further leap forward. NOK is proud that this new plant is in a state where the company can aim for further quality improvement and stability by creating a better premises environment.
NOK's o-rings have already earned the trust of a wide range of industries around the world, but the company is not satisfied with the current situation and would like to continue to meet the diversifying and sophisticated needs of customers through continuous material development and production of highly reliable and high-quality o-rings.

: 30; 60; 90

Part Number
CO0223L
CO0223X2
CO0224A
CO0224B
CO0224U2
CO0225A
CO0225U3
CO0226A
CO0226U3
CO0227A
CO0227B
CO0227U3
CO0228A
CO0228B
CO0228U3
CO0229A
CO0229U3
CO0230A
CO0230B
CO0230U3
CO0231A
CO0231B
CO0231L
CO0231W0
CO0232A
CO0232U3
CO0233A
CO0233L
CO0233U3
CO0234A
CO0234U3
CO0235A
CO0235B
CO0235L
CO0235U3
CO0236A
CO0236L
CO0236V0
CO0237A
CO0237B
CO0237L
CO0237U3
CO0238A
CO0238B
CO0238U3
CO0239A
CO0239U3
CO0240A
CO0240U3
CO0241A
CO0241U3
CO0242A
CO0242U3
CO0243A
CO0243U3
CO0244A
CO0244U3
CO0245A
CO0245U3
CO1968A
CO1968H0
CO2011A
CO2011P0
CO2031A
CO2100A
CO2158A
CO2176A
CO2216A
CO2216G0
CO2223A
CO2244A
CO3210A
CO3303A
CO3303O0
CO6543A
CO6566A
CO8812A
CO8814A
CO8816A
CO8819A
G60-4D
G95-1A
G100-4D
G105-4C
G110-4C
G115-4C
G120-1B
G125-4C
G130-1B
G135-1B

Standard Unit Price	Minimum order quantity	Days to Ship	I.D. d (mm)	Thickness W (mm)	Material	Environment, application	O.D. (mm)	Old JIS Bearing Number	Material (JIS Symbol)	Hardness	Model Number Notation
MYR 30.34	1 Piece(s)	4 Day(s) or more	139.4	3.1	Silicone Rubber	Heat Resistant	145.6	G140	Class 4C	70	Type Dimension Code
MYR 58.09	1 Piece(s)	4 Day(s) or more	139.4	3.1	Fluorine Rubber	Heat Resistant	145.6	G140	Class 4D	70	Type Dimension Code
MYR 12.64	1 Piece(s)	4 Day(s) or more	144.4	3.1	Nitrile Rubber	Mineral Oil Resistant	150.6	G145	Class 1A	70	Type Dimension Code
MYR 19.66	1 Piece(s)	9 Day(s) or more	144.4	3.1	Nitrile Rubber	Mineral Oil Resistant	150.6	G145	Class 1B	90	Type Dimension Code
MYR 59.78	1 Piece(s)	4 Day(s) or more	144.4	3.1	Fluorine Rubber	Heat Resistant	150.6	G145	Class 4D	70	Type Dimension Code
MYR 11.07	1 Piece(s)	4 Day(s) or more	149.3	5.7	Nitrile Rubber	Mineral Oil Resistant	160.7	G150	Class 1A	70	Type Dimension Code
MYR 81.69	1 Piece(s)	4 Day(s) or more	149.3	5.7	Fluorine Rubber	Heat Resistant	160.7	G150	Class 4D	70	Type Dimension Code
MYR 13.31	1 Piece(s)	4 Day(s) or more	154.3	5.7	Nitrile Rubber	Mineral Oil Resistant	165.7	G155	Class 1A	70	Type Dimension Code
MYR 81.69	1 Piece(s)	4 Day(s) or more	154.3	5.7	Fluorine Rubber	Heat Resistant	165.7	G155	Class 4D	70	Type Dimension Code
MYR 15.28	1 Piece(s)	4 Day(s) or more	159.3	5.7	Nitrile Rubber	Mineral Oil Resistant	170.7	G160	Class 1A	70	Type Dimension Code
MYR 27.50	1 Piece(s)	9 Day(s) or more	159.3	5.7	Nitrile Rubber	Mineral Oil Resistant	170.7	G160	Class 1B	90	Type Dimension Code
MYR 100.63	1 Piece(s)	4 Day(s) or more	159.3	5.7	Fluorine Rubber	Heat Resistant	170.7	G160	Class 4D	70	Type Dimension Code
MYR 15.28	1 Piece(s)	4 Day(s) or more	164.3	5.7	Nitrile Rubber	Mineral Oil Resistant	175.7	G165	Class 1A	70	Type Dimension Code
MYR 27.50	1 Piece(s)	9 Day(s) or more	164.3	5.7	Nitrile Rubber	Mineral Oil Resistant	175.7	G165	Class 1B	90	Type Dimension Code
MYR 100.63	1 Piece(s)	4 Day(s) or more	164.3	5.7	Fluorine Rubber	Heat Resistant	175.7	G165	Class 4D	70	Type Dimension Code
MYR 17.70	1 Piece(s)	4 Day(s) or more	169.3	5.7	Nitrile Rubber	Mineral Oil Resistant	180.7	G170	Class 1A	70	Type Dimension Code
MYR 107.60	1 Piece(s)	4 Day(s) or more	169.3	5.7	Fluorine Rubber	Heat Resistant	180.7	G170	Class 4D	70	Type Dimension Code
MYR 17.70	1 Piece(s)	4 Day(s) or more	174.3	5.7	Nitrile Rubber	Mineral Oil Resistant	185.7	G175	Class 1A	70	Type Dimension Code
MYR 29.23	1 Piece(s)	9 Day(s) or more	174.3	5.7	Nitrile Rubber	Mineral Oil Resistant	185.7	G175	Class 1B	90	Type Dimension Code
MYR 107.60	1 Piece(s)	4 Day(s) or more	174.3	5.7	Fluorine Rubber	Heat Resistant	185.7	G175	Class 4D	70	Type Dimension Code
MYR 17.70	1 Piece(s)	4 Day(s) or more	179.3	5.7	Nitrile Rubber	Mineral Oil Resistant	190.7	G180	Class 1A	70	Type Dimension Code
MYR 31.93	1 Piece(s)	9 Day(s) or more	179.3	5.7	Nitrile Rubber	Mineral Oil Resistant	190.7	G180	Class 1B	90	Type Dimension Code
MYR 55.65	1 Piece(s)	9 Day(s) or more	179.3	5.7	Silicone Rubber	Heat Resistant	190.7	G180	Class 4C	70	Type Dimension Code
MYR 114.91	1 Piece(s)	4 Day(s) or more	179.3	5.7	Fluorine Rubber	Heat Resistant	190.7	G180	Class 4D	70	Type Dimension Code
MYR 17.70	1 Piece(s)	4 Day(s) or more	184.3	5.7	Nitrile Rubber	Mineral Oil Resistant	195.7	G185	Class 1A	70	Type Dimension Code
MYR 114.91	1 Piece(s)	4 Day(s) or more	184.3	5.7	Fluorine Rubber	Heat Resistant	195.7	G185	Class 4D	70	Type Dimension Code
MYR 17.70	1 Piece(s)	4 Day(s) or more	189.3	5.7	Nitrile Rubber	Mineral Oil Resistant	200.7	G190	Class 1A	70	Type Dimension Code
MYR 60.68	1 Piece(s)	9 Day(s) or more	189.3	5.7	Silicone Rubber	Heat Resistant	200.7	G190	Class 4C	70	Type Dimension Code
MYR 121.54	1 Piece(s)	4 Day(s) or more	189.3	5.7	Fluorine Rubber	Heat Resistant	200.7	G190	Class 4D	70	Type Dimension Code
MYR 17.70	1 Piece(s)	4 Day(s) or more	194.3	5.7	Nitrile Rubber	Mineral Oil Resistant	205.7	G195	Class 1A	70	Type Dimension Code
MYR 121.54	1 Piece(s)	4 Day(s) or more	194.3	5.7	Fluorine Rubber	Heat Resistant	205.7	G195	Class 4D	70	Type Dimension Code
MYR 23.32	1 Piece(s)	4 Day(s) or more	199.3	5.7	Nitrile Rubber	Mineral Oil Resistant	210.7	G200	Class 1A	70	Type Dimension Code
MYR 40.68	1 Piece(s)	9 Day(s) or more	199.3	5.7	Nitrile Rubber	Mineral Oil Resistant	210.7	G200	Class 1B	90	Type Dimension Code
MYR 65.17	1 Piece(s)	9 Day(s) or more	199.3	5.7	Silicone Rubber	Heat Resistant	210.7	G200	Class 4C	70	Type Dimension Code
MYR 121.54	1 Piece(s)	4 Day(s) or more	199.3	5.7	Fluorine Rubber	Heat Resistant	210.7	G200	Class 4D	70	Type Dimension Code
MYR 24.44	1 Piece(s)	4 Day(s) or more	209.3	5.7	Nitrile Rubber	Mineral Oil Resistant	220.7	G210	Class 1A	70	Type Dimension Code
MYR 59.55	1 Piece(s)	9 Day(s) or more	209.3	5.7	Silicone Rubber	Heat Resistant	220.7	G210	Class 4C	70	Type Dimension Code
MYR 104.17	1 Piece(s)	4 Day(s) or more	209.3	5.7	Fluorine Rubber	Heat Resistant	220.7	G210	Class 4D	70	Type Dimension Code
MYR 26.57	1 Piece(s)	4 Day(s) or more	219.3	5.7	Nitrile Rubber	Mineral Oil Resistant	230.7	G220	Class 1A	70	Type Dimension Code
MYR 44.20	1 Piece(s)	9 Day(s) or more	219.3	5.7	Nitrile Rubber	Mineral Oil Resistant	230.7	G220	Class 1B	90	Type Dimension Code
MYR 64.05	1 Piece(s)	9 Day(s) or more	219.3	5.7	Silicone Rubber	Heat Resistant	230.7	G220	Class 4C	70	Type Dimension Code
MYR 144.41	1 Piece(s)	8 Day(s) or more	219.3	5.7	Fluorine Rubber	Heat Resistant	230.7	G220	Class 4D	70	Type Dimension Code
MYR 26.57	1 Piece(s)	4 Day(s) or more	229.3	5.7	Nitrile Rubber	Mineral Oil Resistant	240.7	G230	Class 1A	70	Type Dimension Code
MYR 43.83	1 Piece(s)	9 Day(s) or more	229.3	5.7	Nitrile Rubber	Mineral Oil Resistant	240.7	G230	Class 1B	90	Type Dimension Code
MYR 152.67	1 Piece(s)	4 Day(s) or more	229.3	5.7	Fluorine Rubber	Heat Resistant	240.7	G230	Class 4D	70	Type Dimension Code
MYR 29.04	1 Piece(s)	4 Day(s) or more	239.3	5.7	Nitrile Rubber	Mineral Oil Resistant	250.7	G240	Class 1A	70	Type Dimension Code
MYR 155.30	1 Piece(s)	4 Day(s) or more	239.3	5.7	Fluorine Rubber	Heat Resistant	250.7	G240	Class 4D	70	Type Dimension Code
MYR 33.04	1 Piece(s)	4 Day(s) or more	249.3	5.7	Nitrile Rubber	Mineral Oil Resistant	260.7	G250	Class 1A	70	Type Dimension Code
MYR 158.06	1 Piece(s)	4 Day(s) or more	249.3	5.7	Fluorine Rubber	Heat Resistant	260.7	G250	Class 4D	70	Type Dimension Code
MYR 33.04	1 Piece(s)	4 Day(s) or more	259.3	5.7	Nitrile Rubber	Mineral Oil Resistant	270.7	G260	Class 1A	70	Type Dimension Code
MYR 165.08	1 Piece(s)	4 Day(s) or more	259.3	5.7	Fluorine Rubber	Heat Resistant	270.7	G260	Class 4D	70	Type Dimension Code
MYR 37.42	1 Piece(s)	4 Day(s) or more	269.3	5.7	Nitrile Rubber	Mineral Oil Resistant	280.7	G270	Class 1A	70	Type Dimension Code
MYR 172.16	1 Piece(s)	4 Day(s) or more	269.3	5.7	Fluorine Rubber	Heat Resistant	280.7	G270	Class 4D	70	Type Dimension Code
MYR 37.42	1 Piece(s)	4 Day(s) or more	279.3	5.7	Nitrile Rubber	Mineral Oil Resistant	290.7	G280	Class 1A	70	Type Dimension Code
MYR 177.94	1 Piece(s)	4 Day(s) or more	279.3	5.7	Fluorine Rubber	Heat Resistant	290.7	G280	Class 4D	70	Type Dimension Code
MYR 39.72	1 Piece(s)	4 Day(s) or more	289.3	5.7	Nitrile Rubber	Mineral Oil Resistant	300.7	G290	Class 1A	70	Type Dimension Code
MYR 185.43	1 Piece(s)	4 Day(s) or more	289.3	5.7	Fluorine Rubber	Heat Resistant	300.7	G290	Class 4D	70	Type Dimension Code
MYR 39.72	1 Piece(s)	4 Day(s) or more	299.3	5.7	Nitrile Rubber	Mineral Oil Resistant	310.7	G300	Class 1A	70	Type Dimension Code
MYR 185.43	1 Piece(s)	4 Day(s) or more	299.3	5.7	Fluorine Rubber	Heat Resistant	310.7	G300	Class 4D	70	Type Dimension Code
MYR 48.63	1 Piece(s)	9 Day(s) or more	204.3	5.7	Nitrile Rubber	Mineral Oil Resistant	215.7	G205	Class 1A	70	Type Dimension Code
MYR 268.03	1 Piece(s)	9 Day(s) or more	204.3	5.7	Fluorine Rubber	Heat Resistant	215.7	G205	Class 4D	70	Type Dimension Code
MYR 52.25	1 Piece(s)	9 Day(s) or more	224.3	5.7	Nitrile Rubber	Mineral Oil Resistant	235.7	G225	Class 1A	70	Type Dimension Code
MYR 256.96	1 Piece(s)	4 Day(s) or more	224.3	5.7	Fluorine Rubber	Heat Resistant	235.7	G225	Class 4D	70	Type Dimension Code
MYR 56.56	1 Piece(s)	9 Day(s) or more	234.3	5.7	Nitrile Rubber	Mineral Oil Resistant	245.7	G235	Class 1A	70	Type Dimension Code
MYR 74.16	1 Piece(s)	9 Day(s) or more	274.3	5.7	Nitrile Rubber	Mineral Oil Resistant	285.7	G275	Class 1A	70	Type Dimension Code
MYR 75.28	1 Piece(s)	9 Day(s) or more	309.3	5.7	Nitrile Rubber	Mineral Oil Resistant	320.7	G310	Class 1A	70	Type Dimension Code
MYR 75.28	1 Piece(s)	4 Day(s) or more	319.3	5.7	Nitrile Rubber	Mineral Oil Resistant	330.7	G320	Class 1A	70	Type Dimension Code
MYR 86.53	1 Piece(s)	9 Day(s) or more	344.3	5.7	Nitrile Rubber	Mineral Oil Resistant	355.7	G345	Class 1A	70	Type Dimension Code
MYR 321.01	1 Piece(s)	9 Day(s) or more	344.3	5.7	Fluorine Rubber	Heat Resistant	355.7	G345	Class 4D	70	Type Dimension Code
MYR 96.64	1 Piece(s)	2 Day(s) or more	349.3	5.7	Nitrile Rubber	Mineral Oil Resistant	360.7	G350	Class 1A	70	Type Dimension Code
MYR 96.64	1 Piece(s)	9 Day(s) or more	359.3	5.7	Nitrile Rubber	Mineral Oil Resistant	370.7	G360	Class 1A	70	Type Dimension Code
MYR 82.60	1 Piece(s)	9 Day(s) or more	284.3	5.7	Nitrile Rubber	Mineral Oil Resistant	295.7	G285	Class 1A	70	Type Dimension Code
MYR 52.25	1 Piece(s)	9 Day(s) or more	214.3	5.7	Nitrile Rubber	Mineral Oil Resistant	225.7	G215	Class 1A	70	Type Dimension Code
MYR 264.61	1 Piece(s)	9 Day(s) or more	214.3	5.7	Fluorine Rubber	Heat Resistant	225.7	G215	Class 4D	70	Type Dimension Code
MYR 65.17	1 Piece(s)	9 Day(s) or more	264.3	5.7	Nitrile Rubber	Mineral Oil Resistant	275.7	G265	Class 1A	70	Type Dimension Code
MYR 82.60	1 Piece(s)	9 Day(s) or more	294.3	5.7	Nitrile Rubber	Mineral Oil Resistant	305.7	G295	Class 1A	70	Type Dimension Code
MYR 75.28	1 Piece(s)	9 Day(s) or more	324.3	5.7	Nitrile Rubber	Mineral Oil Resistant	335.7	G325	Class 1A	70	Type Dimension Code
MYR 86.53	1 Piece(s)	9 Day(s) or more	334.3	5.7	Nitrile Rubber	Mineral Oil Resistant	345.7	G335	Class 1A	70	Type Dimension Code
MYR 96.64	1 Piece(s)	9 Day(s) or more	364.3	5.7	Nitrile Rubber	Mineral Oil Resistant	375.7	G365	Class 1A	70	Type Dimension Code
MYR 108.44	1 Piece(s)	9 Day(s) or more	384.3	5.7	Nitrile Rubber	Mineral Oil Resistant	395.7	G385	Class 1A	70	Type Dimension Code
MYR 19.55	1 Piece(s)	4 Day(s) or more	59.4	3.1	Fluorine Rubber	Heat Resistant	65.6	G60	Class 4D	70	Old JIS Bearing Number
MYR 4.79	1 Piece(s)	2 Day(s) or more	94.4	3.1	Nitrile Rubber	Mineral Oil Resistant	100.6	G95	Class 1A	70	Old JIS Bearing Number
MYR 35.28	1 Piece(s)	2 Day(s) or more	99.4	3.1	Fluorine Rubber	Heat Resistant	105.6	G100	Class 4D	70	Old JIS Bearing Number
MYR 20.23	1 Piece(s)	4 Day(s) or more	104.4	3.1	Silicone Rubber	Heat Resistant	110.6	G105	Class 4C	70	Old JIS Bearing Number
MYR 21.35	1 Piece(s)	4 Day(s) or more	109.4	3.1	Silicone Rubber	Heat Resistant	115.6	G110	Class 4C	70	Old JIS Bearing Number
MYR 22.47	1 Piece(s)	4 Day(s) or more	114.4	3.1	Silicone Rubber	Heat Resistant	120.6	G115	Class 4C	70	Old JIS Bearing Number
MYR 14.33	1 Piece(s)	4 Day(s) or more	119.4	3.1	Nitrile Rubber	Mineral Oil Resistant	125.6	G120	Class 1B	90	Old JIS Bearing Number
MYR 23.60	1 Piece(s)	4 Day(s) or more	124.4	3.1	Silicone Rubber	Heat Resistant	130.6	G125	Class 4C	70	Old JIS Bearing Number
MYR 17.36	1 Piece(s)	4 Day(s) or more	129.4	3.1	Nitrile Rubber	Mineral Oil Resistant	135.6	G130	Class 1B	90	Old JIS Bearing Number
MYR 17.36	1 Piece(s)	4 Day(s) or more	134.4	3.1	Nitrile Rubber	Mineral Oil Resistant	140.6	G135	Class 1B	90	Old JIS Bearing Number

Product TOP

Basic Information

Type	O-Ring	Types	G (For Fixing)

Configure

218 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

I.D. d(mm)
24.4

29.4

34.4

39.4

44.4

49.4

54.4

59.4

64.4

69.4

74.4

79.4

84.4

89.4

94.4

99.4

104.4

109.4

114.4

119.4

124.4

129.4

134.4

139.4

144.4

149.3

154.3

159.3

164.3

169.3

174.3

179.3

184.3

189.3

194.3

199.3

204.3

209.3

214.3

219.3

224.3

229.3

234.3

239.3

244.3

249.3

259.3

264.3

269.3

274.3

279.3

284.3

289.3

294.3

299.3

309.3

319.3

324.3

334.3

344.3

349.3

359.3

364.3

384.3

399.3
Clear
Thickness W(mm)
3.1

5.7
Clear
Material
- Nitrile Rubber
- Silicone Rubber
- Fluorine Rubber
Clear
Environment, application
- Mineral Oil Resistant
- Heat Resistant
Clear
Old JIS Bearing Number
G25

G30

G35

G40

G45

G50

G55

G60

G65

G70

G75

G80

G85

G90

G95

G100

G105

G110

G115

G120

G125

G130

G135

G140

G145

G150

G155

G160

G165

G170

G175

G180

G185

G190

G195

G200

G205

G210

G215

G220

G225

G230

G235

G240

G245

G250

G260

G265

G270

G275

G280

G285

G290

G295

G300

G310

G320

G325

G335

G345

G350

G360

G365

G385

G400
Clear
Material (JIS Symbol)
Class 1A

Class 1B

Class 4C

Class 4D
Clear
Hardness
- 70
- 90
Clear
Model Number Notation
- Old JIS Bearing Number
- Type Dimension Code
Clear
type
- G
Clear

Days to Ship

All

2 Day(s) or Less

4 Day(s) or Less

8 Day(s) or Less

9 Day(s) or Less

10 Day(s) or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently asked question (FAQ)

Question: Please tell me when to replace the O-ring and its lifespan.: Answer: It depends on its material & the usage conditions, so we cannot answer the question of lifespan.
Question: Can I reuse the O-ring I removed once?: Answer: No. Make sure to replace it with a new O-ring.
Question: What should I be careful about when storing O-rings?: Answer: When storing O-rings, please be aware of the following:
•Do not open the packaging unnecessarily, as this may result in foreign objects or dirt adhering to the ring or scratches.
•Store in a low humidity area away from direct sunlight.
•Do not store near a high-temperature heat source.
•Do not hang the ring on a nail or string.
Question: What is the storage period for O-rings?: Answer: This applies to O-rings stored in a sealed package in a warehouse away from direct sunlight, high temperatures, and high humidity.
•NBR: 10-year
•Silicone Rubber (VMQ): 20-year
•FKM: 20-year
•EPDM: 20-year
Question: Can JIS B 2401 - G Series O-Rings be used with aggressive chemicals?: Answer: Yes, but material selection is crucial:
•FKM (Viton®) is highly resistant to fuels, solvents, and aggressive chemicals.
•NBR is suitable for petroleum-based fluids but not strong acids or ozone exposure.
•VMQ (Silicone) is used in applications requiring high-temperature resistance but has poor resistance to petroleum-based fluids.

Check other FAQ (2 items) Hide

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O-Ring JISB2401 G Series (for Fixing) (Part Numbers)

(i)Caution

Drawing

Product Specification

Specifications Table

Selection Support

O-Ring Selection Method

Model number display

Cautions and Prohibitions

Behind the Scenes

Basic Information

Configure

Specification/Dimensions

I.D. d(mm)

Thickness W(mm)

Material

Environment, application

Old JIS Bearing Number

Material (JIS Symbol)

Hardness

Model Number Notation

type

Days to Ship

Specify Alterations

Frequently asked question (FAQ)

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