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O-Ring JIS B 2401 P Series (Fixing/Dynamic)【1-10 Pieces Per Package】 (P8-4D)

O-Ring JIS B 2401 P Series (Fixing/Dynamic) P8-4D
Check FAQ of this product (6 items)

NOK

NOK

Annular packing, O-ring, with an O-shaped (circular) cross section.
[Features]
· The materials are based on a unique compound design. The uniquely designed materials also conform to JIS standard.
· Consistent quality control system. (Conducted by NOK from the stage of compounding and kneading)
· Evaluation and analysis capabilities based on extensive testing facilities
[Applications]
· It is used for fixing and dynamic purposes.
· It can be used as a seal for a wide variety of fluids, such as oil, water, air, and gas, by mounting it in a groove and compressing it appropriately.
· There is a long track record of utilization in the automotive, construction, agricultural, general industrial machinery industries, etc.

(i)Caution

  • It may differ from the manufacturer's current product code, but is the same product.
  • The product images are representative only. Specifications may vary by part number, including shape and color.

PDF

Part Number

Configured Part Number is shown.

P8-4D

Drawing

O-Ring, JISB2401 P Series (for Fixing/Dynamic):Related images

Product Specifications Information

for Motion
For cylindrical surface mount
O-ring JISB2401 P series (fixing/dynamic) for dynamic
O-ring JISB2401 P series (fixing/dynamic) for cylindrical surface mount
 

Groove shape

O-ring JISB2401 P series (fixing/dynamic), no backup ring

No backup ring

O-ring JISB2401 P series (fixing/dynamic), backup ring on one side (only for dynamic and cylindrical surface mount)

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

O-ring JISB2401 P series (fixing/dynamic), backup ring on both sides (only for dynamic and cylindrical surface mount)

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

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

 

For Flat Surface Mount

O-ring JISB2401 P series (fixing/dynamic) for external pressure

For external pressure

O-ring JISB2401 P series (fixing/dynamic) for internal pressure

For internal pressure

Specifications Table

MaterialJIS StandardOld JIS standardNOK symbolColorHardness
Type A durometer		Operating temperature range
Reference *
Nitrile RubberNBR-70-1Class 1 AA305BlackA70 +/- 5-24°C to +100°C
NBR-90Class 1 BA105A90 +/- 5-23°C to +100°C
NBR-70-2Class 2A122A70 +/- 5-22°C to +80°C
Silicone rubberVMQ-70Class 4CS503Navy BlueA70 +/- 5-48°C to +200°C
FluoroelastomerFKM-70Class 4DF201BlackA70 +/- 5-16°C to +200°C

*The operating temperature range is affected by various factors such as the fluid to be sealed, usage conditions, and required functions.

Part numberJIS dimension identification codeO-ring dimensions
Type
Dimension code		Material code　　
* In the *, please enter the material
code on the left		[Reference]
old JIS
nominal number		ThicknessInner diameter
do		Tolerance of inner diameter doComposite burr dimension
f
NBR-70-1NBR-90NBR-70-2VMQ-70FMK-70A305 (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
A122		Class 4C
S503		Class 4D
F201
CO0000ABCLS8OR * P3-NP31.9 +/- 0.082.8+/- 0.14+/- 0.21+/- 0.160.10 or less
CO0001R3OR * P4-NP43.8
CO0002S7OR * P5-NP54.8+/- 0.15+/- 0.22+/- 0.18
CO0003T8OR * P6-NP65.8
CO0004T7OR * P7-NP76.8+/- 0.16+/- 0.24+/- 0.19
CO0005U2OR * P8-NP87.8
CO0006Q5OR * P9-NP98.8+/- 0.17+/- 0.25+/- 0.20
CO0007U8OR * P10-NP109.8
CO0008ABCLX8OR * P10A-NP10A2.4 +/- 0.089.80.12 or less
CO0009X0OR * P11-NP1110.8+/- 0.18+/- 0.27+/- 0.21
CO0010U2OR * P11.2-NP11.211
CO0011V8OR * P12-NP1211.8+/- 0.19+/- 0.28+/- 0.22
CO0012Q0OR * P12.5-NP12.512.3
CO0013X0OR * P14-NP1413.8
CO0014U2OR * P15-NP1514.8+/- 0.20+/- 0.3+/- 0.24
CO0015V8OR * P16-NP1615.8
CO0016T8OR * P18-NP1817.8+/- 0.21+/- 0.31+/- 0.25
CO0017R6OR * P20-NP2019.8+/- 0.22+/- 0.33+/- 0.26
CO0018S5OR * P21-NP2120.8+/- 0.23+/- 0.34+/- 0.27
CO0020U3OR * P22-NP2221.8+/- 0.24+/-0.36+/- 0.28
CO0019ABCLU3OR * P22A-NP22A3.5 +/- 0.121.70.14 or less
CO0021G0OR * P22.4-NP22.422.1
CO0022U2OR * P24-NP2423.7
CO0023Q0OR * P25-NP2524.7+/- 0.25+/- 0.37+/- 0.3
CO0024G0OR * P25.5-NP25.525.2
CO0025N5OR * P26-NP2625.7+/- 0.26+/- 0.39+/- 0.31
CO0026U3OR * P28-NP2827.7+/- 0.28+/- 0.42+/- 0.33
CO0027U3OR * P29-NP2928.7+/- 0.29+/- 0.43+/- 0.34
CO0028G0OR * P29.5-NP29.529.2
CO0029S0OR * P30-NP3029.7
CO0030U3OR * P31-NP3130.7+/- 0.3+/- 0.45+/-0.36
CO0031U2OR * P31.5-NP31.531.2+/- 0.31+/- 0.46+/- 0.37
CO0032U3OR * P32-NP3231.7
CO0033R0OR * P34-NP3433.7+/- 0.33+/- 0.49+/- 0.39
CO0034R0OR * P35-NP3534.7+/- 0.34+/- 0.51+/- 0.40
CO0035U2OR * P35.5-NP35.535.2
CO0036U3OR * P36-NP3635.7
CO0037Q0OR * P38-NP3837.7+/- 0.37+/- 0.55+/- 0.44
CO0038U2OR * P39-NP3938.7
CO0039W0OR * P40-NP4039.7
CO0040U3OR * P41-NP4140.7+/- 0.38+/- 0.57+/- 0.45
CO0041U2OR * P42-NP4241.7+/- 0.39+/- 0.58+/- 0.46
CO0042U2OR * P44-NP4443.7+/- 0.41+/- 0.61+/- 0.49
CO0043P3OR * P45-NP4544.7
CO0044U3OR * P46-NP4645.7+/- 0.42+/- 0.63+/- 0.50
CO0046X0OR * P48-NP4847.7+/- 0.44+/- 0.66+/- 0.52
CO0047O0OR * P49-NP4948.7+/- 0.45+/- 0.67+/- 0.54
CO0049Q5OR * P50-NP5049.7
CO0045ABCLG0OR * P48A-NP48A5.7 +/- 0.1347.6+/- 0.44+/- 0.66+/- 0.520.16 or less
CO0048U3OR * P50A-NP50A49.6+/- 0.45+/- 0.67+/- 0.54
CO0050U3OR * P52-NP5251.6+/- 0.47+/- 0.70+/- 0.56
CO0051G0OR * P53-NP5352.6+/- 0.48+/- 0.72+/- 0.57
CO0052U3OR * P55-NP5554.6+/- 0.49+/- 0.73+/- 0.58
CO0053U3OR * P56-NP5655.6+/- 0.50+/- 0.75+/- 0.60
CO0054G0OR * P58-NP5857.6+/- 0.52+/- 0.78+/- 0.62
CO0055U3OR * P60-NP6059.6+/- 0.53+/- 0.79+/- 0.63
CO0056U3OR * P62-NP6261.6+/- 0.55+/- 0.82+/- 0.66
CO0057H0OR * P63-NP6362.6+/- 0.56+/- 0.84+/- 0.67
CO0058H0OR * P65-NP6564.6+/- 0.57+/- 0.85+/- 0.68
CO0059U3OR * P67-NP6766.6+/- 0.59+/- 0.88+/- 0.70
CO0060O0OR * P70-NP7069.6+/- 0.61+/- 0.91+/- 0.73
CO0061U3OR * P71-NP7170.6+/- 0.62+/- 0.93+/- 0.74
CO0062U3OR * P75-NP7574.6+/- 0.65+/-0.97+/- 0.78
CO0063Q0OR * P80-NP8079.6+/- 0.69+/- 1.03+/- 0.82
CO0064G0OR * P85-NP8584.6+/- 0.73+/- 1.09+/- 0.87
CO0065U3OR * P90-NP9089.6+/- 0.77+/- 1.15+/- 0.92
CO0066U3OR * P95-NP9594.6+/- 0.81+/- 1.21+/-0.97
CO0067T0OR * P100-NP10099.6+/- 0.84+/- 1.26+/- 1.0
CO0068U3OR * P102-NP102101.6+/- 0.85+/- 1.27+/- 1.02
CO0069U3OR * P105-NP105104.6+/- 0.87+/- 1.30+/- 1.04
CO0070U3OR * P110-NP110109.6+/- 0.91+/-1.36+/- 1.09
CO0071G0OR * P112-NP112111.6+/- 0.92+/- 1.38+/- 1.10
CO0072U3OR * P115-NP115114.6+/- 0.94+/- 1.41+/- 1.12
CO0073U3OR * P120-NP120119.6+/- 0.98+/- 1.47+/- 1.17
CO0074U3OR * P125-NP125124.6+/- 1.01+/- 1.51+/- 1.21
CO0075T0OR * P130-NP130129.6+/- 1.05+/- 1.57+/- 1.26
CO0076U3OR * P132-NP132131.6+/- 1.06+/- 1.59+/- 1.27
CO0077U3OR * P135-NP135134.6+/- 1.09+/- 1.63+/- 1.30
CO0078U3OR * P140-NP140139.6+/- 1.12+/- 1.68+/- 1.34
CO0079U3OR * P145-NP145144.6+/- 1.16+/- 1.74+/- 1.39
CO0081S0OR * P150-NP150149.6+/- 1.19+/- 1.78+/- 1.42
CO0080ABCLU3OR * P150A-NP150A8.4 +/- 0.15149.5+/- 1.19+/- 1.78+/- 1.420.18 or less
CO0082U3OR * P155-NP155154.5+/- 1.23+/- 1.84+/- 1.47
CO0083G0OR * P160-NP160159.5+/- 1.26+/- 1.89+/- 1.51
CO0084G0OR * P165-NP165164.5+/- 1.30+/- 1.95+/- 1.56
CO0085U3OR * P170-NP170169.5+/- 1.33+/- 1.99+/- 1.59
CO0086G0OR * P175-NP175174.5+/- 1.37+/- 2.05+/- 1.64
CO0087P0OR * P180-NP180179.5+/- 1.40+/- 2.10+/- 1.68
CO0088U3OR * P185-NP185184.5+/- 1.44+/- 2.16+/- 1.72
CO0089U3OR * P190-NP190189.5+/- 1.48+/- 2.22+/- 1.77
CO0090G0OR * P195-NP195194.5+/- 1.51+/- 2.26+/- 1.81
CO0091G0OR * P200-NP200199.5+/- 1.55+/- 2.32+/- 1.86
CO0092G0OR * P205-NP205204.5+/- 1.58+/- 2.37+/- 1.89
CO0093O0OR * P209-NP209208.5+/- 1.61+/- 2.41+/- 1.93
CO0094H0OR * P210-NP210209.5+/- 1.62+/- 2.43+/- 1.94
CO0095G0OR * P215-NP215214.5+/- 1.65+/- 2.47+/- 1.98
CO0096U3OR * P220-NP220219.5+/- 1.68+/- 2.52+/- 2.01
CO0097G0OR * P225-NP225224.5+/- 1.71+/- 2.56+/- 2.05
CO0098U3OR * P230-NP230229.5+/- 1.75+/- 2.62+/- 2.10
CO0099U3OR * P235-NP235234.5+/- 1.78+/- 2.67+/- 2.13
CO0100H0OR * P240-NP240239.5+/- 1.81+/- 2.71+/- 2.17
CO0101U3OR * P245-NP245244.5+/- 1.84+/- 2.76+/- 2.20
CO0102G0OR * P250-NP250249.5+/- 1.88+/- 2.82+/- 2.25
CO0103G0OR * P255-NP255254.5+/- 1.91+/- 2.86+/- 2.29
CO0104U3OR * P260-NP260259.5+/- 1.94+/- 2.91+/- 2.32
CO0105G0OR * P265-NP265264.5+/- 1.97+/- 2.95+/- 2.36
CO0106G0OR * P270-NP270269.5+/- 2.01+/- 3.01+/- 2.41
CO0107G0OR * P275-NP275274.5+/- 2.04+/- 3.06+/- 2.44
CO0108G0OR * P280-NP280279.5+/- 2.07+/- 3.10+/- 2.48
CO0109N0OR * P285-NP285284.5+/- 2.10+/- 3.15+/- 2.52
CO0110N0OR * P290-NP290289.5+/- 2.14+/- 3.21+/- 2.56
CO0111G0OR * P295-NP295294.5+/- 2.17+/- 3.25+/- 2.60
CO0112N0OR * P300-NP300299.5+/- 2.20+/- 3.30+/- 2.64
CO2147*---G0OR * P305-NP305304.5+/-2.24-+/- 2.69
CO8835*OR * P310-NP310309.5+/-2.27-+/-2.72
CO0113BCLO0OR * P315-NP315314.5+/- 2.30+/- 3.45+/- 2.76
CO0114G0OR * P320-NP320319.5+/- 2.33+/- 3.49+/- 2.79
CO8836*---G0OR * P325-NP325324.5+/- 2.36-+/-2.83
CO7645*OR * P330-NP330329.5+/- 2.39-+/- 2.87
CO0115BCLG0OR * P335-NP335334.5+/- 2.42+/- 3.63+/- 2.90
CO0116N0OR * P340-NP340339.5+/- 2.45+/- 3.67+/- 2.94
CO8837*---G0OR * P345-NP345344.5+/- 2.48-+/- 2.98
CO6615*OR * P350-NP350349.5+/- 2.51-+/- 3.01
CO0117BCLG0OR * P355-NP355354.5+/- 2.54+/- 3.81+/- 3.04
CO0118G0OR * P360-NP360359.5+/- 2.57+/- 3.85+/- 3.08
CO6630*---G0OR * P365-NP365364.5+/- 2.60-+/- 3.12
CO8838*OR * P370-NP370369.5+/- 2.63-+/- 3.16
CO0119BCLG0OR * P375-NP375374.5+/- 2.67+/- 4.00+/- 3.20
CO2274*---G0OR * P380-NP380379.5+/- 2.70-+/- 3.24
CO0120BCLG0OR * P385-NP385384.5+/- 2.73+/- 4.09+/- 3.27
CO6650*---G0OR * P390-NP390389.5+/- 2.77-+/- 3.32
CO8839*OR * P395-NP395394.5+/- 2.79-+/- 3.35
CO0121BCLG0OR * P400-NP400399.5+/- 2.82+/- 4.23+/- 3.38
CO2311*---G0OR * P405-NP405404.5+/- 3.00-+/- 3.600.18 or less
CO6663*OR * P410-NP410409.5
CO2337*OR * P415-NP415414.5
CO8840*OR * P420-NP420419.5
CO2359*OR * P425-NP425424.5
CO2371*OR * P430-NP430429.5
CO2383*G0OR * P435-NP435434.5
CO8841*G0OR * P440-NP440439.5
CO6681*G0OR * P445-NP445444.5
CO8842*G0OR * P450-NP450449.5
CO2433*G0OR * P455-NP455454.5+/- 3.00-+/- 4.000.18 or less
CO8843*G0OR * P460-NP460459.5
CO2453*H0OR * P465-NP465464.5
CO8844*G0OR * P470-NP470469.5
CO8845*G0OR * P475-NP475474.5
CO6734*G0OR * P480-NP480479.5
CO9165*G0OR * P485-NP485484.5
CO9015*G0OR * P490-NP490489.5
CO9016*G0OR * P495-NP495494.5
CO9057*G0OR * P500-NP500499.5
  • 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), class 4 E, class 5, and H materials.

Features

O-Ring, JISB2401 P Series (for Fixing/Dynamic):Related images

An annular packing with an O-shaped cross section that seals in fluids and dust.

An O-ring is an annular packing with an O-shaped (circular) cross section that is fitted in a groove and compressed appropriately to prevent the leakage of a wide variety of fluids such as oil, water, air, and gas. By making full use of synthetic rubber suitable for a variety of purposes, it is possible to withstand long-term use and use under harsh conditions.

Technical Information

O-ring sealing principle

The sealing principle of the O-ring is that the compressed O-ring maintains the repulsive force to seal.

O-ring JISB2401 P series (fixing/dynamic), O-ring sealing principle
 

Properties required for O-ring materials

Since O-rings exert their sealing force by the stress generated by crushing, it is fundamentally required that they have an appropriate amount of stress within a range that does not cause abnormal deformation.
This basic property must not be lost during use. Synthetic rubber is one of the best material with these properties.
However, it is difficult to cover all of these properties with a single material, so it is necessary to use different materials according to each application.

O-ring JISB2401 P series (fixing and dynamic), Properties required for O-ring materials

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

ProductMaterialStorage period
Single rubber productNitrile rubber (NBR)10 years
Silicone rubber (VMQ)20 years
Fluoroelastomer (FKM)20 years
Sthylene-butadiene rubber (SBR)10 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
45
60
  1. 1
Part Number
P8-4D
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipI.D. d
(mm) 		Thickness W
(mm) 		Material Environment, application O.D.
(mm) 		Old JIS Bearing Number Material (JIS Symbol) Hardness Model Number Notation Operating Temperature Range
(℃) 		Wire Diameter Tolerance
(mm) 		Internal Diameter Tolerance
(mm) 		JAN code Ordering Code

MYR 2.73

1 Piece(s) 4 Day(s) or more 7.81.9Fluorine RubberMineral Oil Resistant / Heat Resistant / Chemical Resistant11.6P8Class 4D70Old JIS Bearing Number-16 to 200±0.08±0.19--

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  1. 1
 

Basic Information

Type O-Ring Types P (for Motion / Fixing)

Please check the type/dimensions/specifications of the part P8-4D in the O-Ring JIS B 2401 P Series (Fixing/Dynamic) series.

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Specification/Dimensions

  • Environment, application

    • Mineral Oil Resistant
    • Heat Resistant
    • Abrasion Resistant
    • Pressure Resistance
    • Chemical Resistant
    • Cold Resistance

    Clear

  • type

    • OR-1AP
    • P

    Clear

  • I.D. d(mm)

    • 2.8
    • 3.8
    • 4.8
    • 5.8
    • 6.8
    • 7.8
    • 8.8
    • 9.8
    • 10.8
    • 11
    • 11.8
    • 12.3
    • 13.8
    • 14.8
    • 15.8
    • 17.8
    • 19.8
    • 20.8
    • 21.7
    • 21.8
    • 22.1
    • 23.7
    • 24.7
    • 25.2
    • 25.7
    • 27.7
    • 28.7
    • 29.2
    • 29.7
    • 30.7
    • 31.2
    • 31.7
    • 33.7
    • 34.7
    • 35.2
    • 35.7
    • 37.7
    • 38.7
    • 39.7
    • 40.7
    • 41.7
    • 43.7
    • 44.7
    • 45.7
    • 47.6
    • 47.7
    • 48.7
    • 49.6
    • 49.7
    • 51.6
    • 52.6
    • 54.6
    • 55.6
    • 57.6
    • 59.6
    • 61.6
    • 62.6
    • 64.6
    • 66.6
    • 69.6
    • 70.6
    • 74.6
    • 79.6
    • 84.6
    • 89.6
    • 94.6
    • 99.6
    • 101.6
    • 104.6
    • 109.6
    • 111.6
    • 114.6
    • 119.6
    • 124.6
    • 129.6
    • 131.6
    • 134.6
    • 139.6
    • 144.6
    • 149.5
    • 149.6
    • 154.5
    • 159.5
    • 164.5
    • 169.5
    • 174.5
    • 179.5
    • 184.5
    • 189.5
    • 194.5
    • 199.5
    • 204.5
    • 208.5
    • 209.5
    • 214.5
    • 219.5
    • 224.5
    • 229.5
    • 234.5
    • 239.5
    • 244.5
    • 249.5
    • 254.5
    • 259.5
    • 264.5
    • 269.5
    • 274.5
    • 279.5
    • 284.5
    • 289.5
    • 294.5
    • 299.5
    • 314.5
    • 319.5
    • 334.5
    • 339.5
    • 354.5
    • 359.5
    • 374.5
    • 384.5
    • 399.5

    Clear

  • Thickness W(mm)

    • 1.9
    • 2.4
    • 3.5
    • 5.7
    • 8.4

    Clear

  • Material

    • Nitrile Rubber
    • Silicone Rubber
    • Fluorine Rubber

    Clear

  • Old JIS Bearing Number

    • P3
    • P4
    • P5
    • P6
    • P7
    • P8
    • P9
    • P10
    • P10A
    • P11
    • P11.2
    • P12
    • P12.5
    • P14
    • P15
    • P16
    • P18
    • P20
    • P21
    • P22
    • P22A
    • P22.4
    • P24
    • P25
    • P25.5
    • P26
    • P28
    • P29
    • P29.5
    • P30
    • P31
    • P31.5
    • P32
    • P34
    • P35
    • P35.5
    • P36
    • P38
    • P39
    • P40
    • P41
    • P42
    • P44
    • P45
    • P46
    • P48
    • P48A
    • P49
    • P50
    • P50A
    • P52
    • P53
    • P55
    • P56
    • P58
    • P60
    • P62
    • P63
    • P65
    • P67
    • P70
    • P71
    • P75
    • P80
    • P85
    • P90
    • P95
    • P100
    • P102
    • P105
    • P110
    • P112
    • P115
    • P120
    • P125
    • P130
    • P132
    • P135
    • P140
    • P145
    • P150
    • P150A
    • P155
    • P160
    • P165
    • P170
    • P175
    • P180
    • P185
    • P190
    • P195
    • P200
    • P205
    • P209
    • P210
    • P215
    • P220
    • P225
    • P230
    • P235
    • P240
    • P245
    • P250
    • P255
    • P260
    • P265
    • P270
    • P275
    • P280
    • P285
    • P290
    • P295
    • P300
    • P315
    • P320
    • P335
    • P340
    • P355
    • P360
    • P375
    • P385
    • P400

    Clear

  • Material (JIS Symbol)

    • Class 1A
    • Class 1B
    • Class 4C
    • Class 4D

    Clear

  • Hardness

    • 70
    • 90

    Clear

  • Model Number Notation

    • Material Identification
    • Old JIS Bearing Number
    • Type Dimension Code

    Clear

  • Operating Temperature Range(℃)

    • -48 to 200
    • -24 to 100
    • -23 to 100
    • -16 to 200

    Clear

  • Wire Diameter Tolerance(mm)

    • ±0.08
    • ±0.09
    • ±0.10
    • ±0.13
    • ±0.15

    Clear

  • Internal Diameter Tolerance(mm)

    • ±0.14
    • ±0.15
    • ±0.16
    • ±0.17
    • ±0.18
    • ±0.19
    • ±0.20
    • ±0.21
    • ±0.22
    • ±0.23
    • ±0.24
    • ±0.25
    • ±0.26
    • ±0.27
    • ±0.28
    • ±0.29
    • ±0.30
    • ±0.31
    • ±0.33
    • ±0.34
    • ±0.36
    • ±0.37
    • ±0.38
    • ±0.39
    • ±0.40
    • ±0.41
    • ±0.42
    • ±0.43
    • ±0.44
    • ±0.45
    • ±0.46
    • ±0.47
    • ±0.48
    • ±0.49
    • ±0.50
    • ±0.51
    • ±0.52
    • ±0.53
    • ±0.54
    • ±0.55
    • ±0.56
    • ±0.57
    • ±0.58
    • ±0.59
    • ±0.60
    • ±0.61
    • ±0.62
    • ±0.63
    • ±0.65
    • ±0.66
    • ±0.67
    • ±0.68
    • ±0.69
    • ±0.70
    • ±0.73
    • ±0.74
    • ±0.77
    • ±0.78
    • ±0.79
    • ±0.81
    • ±0.82
    • ±0.84
    • ±0.85
    • ±0.87
    • ±0.91
    • ±0.92
    • ±0.93
    • ±0.94
    • ±0.97
    • ±0.98
    • ±1.00
    • ±1.01
    • ±1.02
    • ±1.04
    • ±1.05
    • ±1.06
    • ±1.09
    • ±1.10
    • ±1.12
    • ±1.15
    • ±1.16
    • ±1.17
    • ±1.19
    • ±1.21
    • ±1.23
    • ±1.26
    • ±1.27
    • ±1.30
    • ±1.33
    • ±1.34
    • ±1.36
    • ±1.37
    • ±1.38
    • ±1.39
    • ±1.40
    • ±1.42
    • ±1.44
    • ±1.47
    • ±1.48
    • ±1.51
    • ±1.55
    • ±1.56
    • ±1.58
    • ±1.59
    • ±1.61
    • ±1.62
    • ±1.64
    • ±1.65
    • ±1.68
    • ±1.71
    • ±1.72
    • ±1.74
    • ±1.75
    • ±1.77
    • ±1.78
    • ±1.81
    • ±1.84
    • ±1.86
    • ±1.88
    • ±1.89
    • ±1.91
    • ±1.93
    • ±1.94
    • ±1.97
    • ±2.01
    • ±2.04
    • ±2.05
    • ±2.07
    • ±2.10
    • ±2.13
    • ±2.14
    • ±2.17
    • ±2.20
    • ±2.25
    • ±2.30
    • ±2.32
    • ±2.33
    • ±2.36
    • ±2.41
    • ±2.42
    • ±2.44
    • ±2.45
    • ±2.48
    • ±2.52
    • ±2.54
    • ±2.56
    • ±2.57
    • ±2.64
    • ±2.67
    • ±2.73
    • ±2.76
    • ±2.79
    • ±2.82
    • ±2.90
    • ±2.94
    • ±3.04
    • ±3.08
    • ±3.20
    • ±3.27
    • ±3.38
    • ±3.67

    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

    Clear

Specify Alterations

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 P 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.
Question: Are JIS B 2401 P Series O-Rings compatible with hydraulic and pneumatic systems?
Answer: Yes, these O-rings are widely used in hydraulic cylinders, pumps, and pneumatic actuators to prevent fluid and air leaks.

Check other FAQ (3 items) Hide

Products like this...

Part Number
CO0000B
CO0000L
CO0000S8
CO0001A
CO0001B
P90-4C
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipI.D. d
(mm) 		Thickness W
(mm) 		Material Environment, application O.D.
(mm) 		Old JIS Bearing Number Material (JIS Symbol) Hardness Model Number Notation Operating Temperature Range
(℃) 		Wire Diameter Tolerance
(mm) 		Internal Diameter Tolerance
(mm) 		JAN code Ordering Code

MYR 1.29

1 Piece(s) 4 Day(s) or more 2.81.9Nitrile RubberPressure Resistance / Heat Resistant / Abrasion Resistant / Mineral Oil Resistant6.6P3Class 1B90Type Dimension Code-23 to 100±0.08±0.14--

MYR 2.12

1 Piece(s) 4 Day(s) or more 2.81.9Silicone RubberCold Resistance / Heat Resistant6.6P3Class 4C70Type Dimension Code-48 to 200±0.08±0.21--

MYR 1.96

1 Piece(s) 4 Day(s) or more 2.81.9Fluorine RubberChemical Resistant / Heat Resistant / Mineral Oil Resistant6.6P3Class 4D70Type Dimension Code-16 to 200±0.08±0.16--

MYR 1.23

1 Piece(s) 4 Day(s) or more 3.81.9Nitrile RubberHeat Resistant / Abrasion Resistant / Mineral Oil Resistant7.6P4Class 1A70Type Dimension Code-24 to 100±0.08±0.14--

MYR 1.29

1 Piece(s) 4 Day(s) or more 3.81.9Nitrile RubberPressure Resistance / Heat Resistant / Abrasion Resistant / Mineral Oil Resistant7.6P4Class 1B90Type Dimension Code-23 to 100±0.08±0.14--

MYR 25.28

1 Piece(s) 4 Day(s) or more 89.65.7Silicone RubberCold Resistance / Heat Resistant101P90Class 4C70Old JIS Bearing Number-48 to 200±0.13±1.15--

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