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O-Ring, G, Fixing (Cylindrical Surface) (G3-1A)

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A series of O-rings defined by JIS standards.
[Features]
·It has good sealing performance with self-sealing action despite its simple structure
·Stable sealing performance even under high pressure
·Compact installation space and easy installation
·Sealing is not directional and is possible from both sides
[Applications]
·A JIS standard series for various machines
·This product is for static applications and the material can be selected depending on usage conditions, making it suitable for a wide range of applications

Part Number

Configured Part Number is shown.

G3-1A

Product Specifications
Part Numbers
Catalog

Drawing

Drawing 1

Drawing 2

Product Specification

This synthetic rubber ring was made for the purpose of sealing liquid and gases in reciprocating motion or fixed areas

Specifications Table

unit: mm

Nominal number	O-ring actual size				Groove section dimensions							Groove section dimensions						Reference
	O-ring actual size				Shaft diameter d		Reference			Hole diameter D		Reference	G (0 to +0.25)			R	E	Squeeze
	d₂		d₁				Fitting symbol equivalent to tolerances of d					Fitting symbol equivalent to tolerances of D	No backup ring	1 pc. backup ring	2 pcs. backup rings	Maximum	Maximum	mm		%
	d₂		d₁				Fitting symbol equivalent to tolerances of d					Fitting symbol equivalent to tolerances of D	No backup ring	1 pc. backup ring	2 pcs. backup rings	Maximum	Maximum	Maximum	Minimum	Maximum	Minimum
*G3	3.1	+/- 0.10	2.4	+/- 0.14	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
*G4			3.4	+/- 0.14
*G5			4.4	+/- 0.15
*G6			5.4	+/- 0.15
*G7			6.4	+/- 0.16
*G8			7.4	+/- 0.16
*G9			8.4	+/- 0.17
*G10			9.4	+/- 0.17
*G11			10.4	+/- 0.18
*G12			11.4	+/- 0.18
*G13			12.4	+/- 0.19
*G14			13.4	+/- 0.19
*G15			14.4	+/- 0.20

* Mark indicates the outer dimension of the JIS standard.

Product Feature Details

The sealing function is enabled by the stress generated when this product is installed to the groove and compressed moderately.
This product is easier to install than any other packing, takes up less space, and can be done the same way by anyone, and its self-sealing action provides stable sealing performance even under high pressure using only an O-ring.
It can be installed with a small amount of compression (squeeze) and has relatively low kinetic frictional resistance for higher efficiency.
It does not cause overtightening of nuts when used for fixing.

Principle of action
Fig. 1: When an O-ring seals a fluid with no or low pressure, the seal is maintained by a squeeze equivalent to a percentage of the cross-sectional diameter of the O-ring.
Fig. 2: As shown in the figure, when the pressure of the fluid increases, the squeezed O-ring in the groove seals by self-sealing action, being pushed from the pressure side and leaning to one side.
Fig. 3: If the pressure increases further and exceeds 10 MPa, the softness of the rubber will cause the O-ring to be damaged by protruding into the clearance.
Fig. 4: To prevent this, leather or fluoropolymer backup rings are attached to both sides of the O-ring when the pressure is on the opposite side or both sides of the pressure direction.

Cautions and Prohibitions

Cautions

The dynamic O-ring smooths the sliding metal surface finish. (It should be about 1.5S.) The inside of the groove should be about 3S.
If the reciprocating sliding surface has holes, etc., take care to protect them.
Do not use more than 2 O-rings in the same location.
Pay attention to the groove design.
If the O-ring breaks down, it will suddenly leak and cause an accident, so be sure to replace it at the end of its useful life for dynamic applications.
Due to its rubbery nature, it will age in the air, so care must be taken when storing it.

: 30; 45; 60

Part Number
G3-1A

Part Number	Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Type	I.D. d1 (mm)	Thickness d2 (mm)	Material	Type of Material	Nominal Number
	MYR 2.02	10 Piece(s)	Available	17 Day(s) or more	10	-	2.4	3.1	Nitrile Rubber	A Type A	G003

Product TOP

Basic Information

Standard	For fixing G

Please check the type/dimensions/specifications of the part G3-1A in the O-Ring, G, Fixing (Cylindrical Surface) series.

Configure

1 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Type
- O-Ring
Clear
type
- G-1A
- G-1B
- G-2
- G-4C
- G-4D
Clear
I.D. d1(mm)
2.4

5.4

6.4

7.4

8.4

12.4

14.4

15.4

16.4

17.4

19.4

24.4

29.4

34.4

39.4

44.4

49.4

51.4

54.4

57.4

59.4

61.4

62.4

63.4

64.4

66.4

69.4

71.4

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

254.3

259.3

264.3

269.3

274.3

279.3

284.3

289.3

294.3

299.3

324.3

329.3

379.3

459.3
Clear
Thickness d2(mm)
3.1

5.7
Clear
Material
- Nitrile Rubber
- Silicone Rubber
- Fluoroelastomer
  - Fluorine Rubber
Clear
Type of Material
- Class 1 B
- Class 2
- Class 4 C
- Class 4 D
- A Type A
- A Type B
Clear
Nominal Number
G003

G006

G007

G008

G009

G013

G015

G016

G017

G018

G020

G025

G030

G035

G040

G045

G050

G052

G055

G058

G060

G062

G063

G064

G065

G067

G070

G072

G075

G080

G085

G090

G095

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

G255

G260

G265

G270

G275

G280

G285

G290

G295

G300

G325

G330

G380

G460
Clear

Days to Ship

All

4 Day(s) or Less

10 Day(s) or Less

12 Day(s) or Less

13 Day(s) or Less

17 Day(s) or Less

24 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 .

Products like this...

Part Number
G100-4D
G105-1A
G105-1B
G30-1A
G30-1B
G30-4C

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Type	I.D. d1 (mm)	Thickness d2 (mm)	Material	Type of Material	Nominal Number
MYR 25.23	1 Piece(s)	Available	4 Day(s) or more	10	-	99.4	3.1	[Fluoroelastomer] Fluorine Rubber	Class 4 D	G100
MYR 6.62	1 Piece(s)	Available	10 Day(s) or more	10	-	104.4	3.1	Nitrile Rubber	A Type A	G105
MYR 8.53	1 Piece(s)	Available	17 Day(s) or more	10	-	104.4	3.1	Nitrile Rubber	A Type B	G105
MYR 2.41	10 Piece(s)	Available	10 Day(s) or more	10	-	29.4	3.1	Nitrile Rubber	A Type A	G030
MYR 4.15	1 Piece(s)	Available	13 Day(s) or more	10	-	29.4	3.1	Nitrile Rubber	A Type B	G030
MYR 3.79	1 Piece(s)	Available	4 Day(s) or more	10	-	29.4	3.1	Silicone Rubber	Class 4 C	G030

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O-Ring, G, Fixing (Cylindrical Surface) (G3-1A)

Drawing

Product Specification

Specifications Table

Product Feature Details

Cautions and Prohibitions

Basic Information

Configure

Specification/Dimensions

Type

type

I.D. d1(mm)

Thickness d2(mm)

Material

Type of Material

Nominal Number

Days to Ship

Specify Alterations

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