O-Rings / P Series

O-Rings / P Series

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[One O-ring, P series.
  • Order quantities extended (D-JIT)

Data sheet

Unit еxample related to this product

Part Number

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Dimensional Drawings

P Series
NPA, NPB, NPSW, NPSK, NPF, NPFH, NPEG

Back-Up Ring
NPBR

O-Ring - P Series: Related Image

For surface mounting /
For external pressure

For surface mounting /
For internal pressure

For Fixing Cylinder Surface

For Motion

No Back-Up Ring

Back-Up Ring on One Side

Back-Up Rings on Both Sides

O-Ring - P Series: Related Image

Detailed Fitting Size

 

TypeNo,G Dimension (Tolerance + 0.25 0)H Dimension
H±0.05
R Dimension
Max. Value
No Back-Up Ring
 
Back-Up Ring on One Side
 
Back-Up Rings on Both Sides
 
 NPA NPB
 NPSW NPSK
 NPF NPFH
 NPEG
3 to 102.53.95.41.40.4
10 A to 223.24.46.01.80.4
22 A to 504.76.07.82.70.8
50 A to 807.59.011.54.60.9
  • (1) For O-rings for surface mounting, design the piping system in such a way that, when the internal pressure is applied, the outer circumference of O-rings is put in close contact with the outer wall of the groove; and when an external pressure is applied, the inner circumference of O-rings is put in close contact with the inner wall of the groove.
  • (2) When using an O-ring for surface mounting for an internal pressure, if the length of D is 30 mm or less, make the length approximately 0.2 to 0.3 mm longer.
  • (3) The groove dimensions are for reference.

Product Specifications

Type[M] MaterialJIS Material
Identification Symbol
[H]Hardness (JIS Hs)ColorOperable Temperature RangeOld JIS SymbolApplications:Features
NPANitrile RubberNBR-70-170±5Black-30 to 100°CClass 1 AMineral Oil ResistantMost representative material with superior oil / abrasion resistance and heat stability.
NPBNBR-9090±5-25 to 100°CClass 1 B
NPSWSilicon Rubber-50±5Milky White-50 to 200°CHeat ResistantHaving excellent high and low temperature resistances, this material covers the widest range of operating temperatures among synthetic rubbers.
NPSW is semitransparent and there are individual differences in color.
NPSW and NPSK conform to Food Sanitation Act.
NPSKVMQ-7070±5Scarlet Red-50 to 200°CClass 4 C
NPFFluoro RubberFKM-7070±5Black-15 to 200°CClass 4 DHeat ResistantBest in oil / chemical resistance and heat stability as synthetic rubber. Suitable for a wide range of applications.
  Chemical Resistance (Reference)
NPFHFKM-9090±5
NPEGEthylene Propylene RubberEPDM-7070±5Black-45 to 130°CFor weather resistant itemsExcellent material in weather resistance, ozone resistance and electrical characteristics.
NPBRFluororesin--WhiteSubject to O-ringFor high voltage useUsed when the pressure resistance of O-ring is insufficient.
[ ! ] There are individual differences in whether the surface is glossy or not.
[ ! ] The service life is not constant depending on the operating environment.
* Please also consider products that are heat resistant and chemical resistant.

Specification Table

Part Number
NPA3

JIS B 2401 P Series O-Ring (For Mounting, Dynamic)

Part NumberJISWI.D.Matching Material
TypeNo.NominaldoNPA·NPBNPSK·NPSWNPF·NPFHdToleranceDTolerance
NumberToleranceNPEGTolerance
  Tolerance 
NPA3P31.9±0.082.8±0.14±0.21±0.1630
-0.05
6+0.05
0
(Nitrile Rubber, Black)4P43.847
 5P54.8±0.15±0.22±0.1858
 6P65.869
NPB7P76.8±0.16±0.24±0.19710
(Nitrile Rubber, Black)8P87.8811
 9P98.8±0.17±0.25±0.20912
 10P109.81013
NPSW10 AP10A2.4±0.099.8100
-0.06
14+0.06
0
(Silicon Rubber, Milky White)11P1110.8±0.18±0.27±0.211115
 11.2P11.211.011.215.2
 12P1211.8±0.19±0.28±0.221216
NPSK12.5P12.512.312.516.5
(Silicon Rubber, Vermilion)14P1413.81418
 15P1514.8±0.20±0.30±0.241519
 16P1615.81620
NPF18P1817.8±0.21±0.31±0.251822
(Fluoro Rubber, Black)20P2019.8±0.22±0.33±0.262024
 21P2120.8±0.23±0.34±0.272125
 22P2221.8±0.24±0.36±0.282226
NPFH22 AP22A3.5±0.121.7220
-0.08
28+0.08
0
(Fluoro Rubber, Black)22.4P22.422.122.428.4
 24P2423.72430
 25P2524.7±0.25±0.37±0.302531
NPEG25.5P25.525.225.531.5
(Ethylene Propylene Rubber, Black)26P2625.7±0.26±0.39±0.312632
 28P2827.7±0.28±0.42±0.332834
 29P2928.7±0.29±0.43±0.342935
 29.5P29.529.229.535.5
 30P3029.73036
 31P3130.7±0.30±0.45±0.363137
 31.5P31.531.2±0.31±0.46±0.3731.537.5
 32P3231.73238
 34P3433.7±0.33±0.49±0.393440
 35P3534.7±0.34±0.51±0.403541
 35.5P35.535.235.541.5
 36P3635.73642
 38P3837.7±0.37±0.55±0.443844
 39P3938.73945
 40P4039.74046
 41P4140.7±0.38±0.57±0.454147
 42P4241.7±0.39±0.58±0.484248
 44P4443.7±0.41±0.61±0.494450
 45P4544.74551
 46P4645.7±0.42±0.63±0.504652
 48P4847.7±0.44±0.66±0.524854
 50P5049.7±0.45±0.67±0.545056
 50 AP50A5.7±0.130
-0.10
60+0.10
0
 52P5251.6±0.47±0.70±0.565262
 53P5352.6±0.48±0.72±0.575363
 55P5554.6±0.49±0.73±0.585565
 56P5655.6±0.50±0.75±0.605666
 58P5857.6±0.52±0.78±0.625868
 60P6059.6±0.53±0.79±0.636070
 62P6261.6±0.55±0.82±0.666272
 63P6362.6±0.56±0.84±0.676373
 65P6564.6±0.57±0.85±0.686575
 67P6766.6±0.59±0.88±0.706777
 70P7069.6±0.61±0.91±0.737080
 71P7170.6±0.62±0.93±0.747181
 75P7574.6±0.65±0.97±0.787585
 80P8079.6±0.69±1.03±0.828090

JIS B 2407 Back-Up Rings (For the P Series, Bias Cut)

Part NumberApplicable O-rings
Nominal Number
WdDT
TypeNo.
NPBR
(Fluororesin, White)
15P152.0+0.03
-0.05
15+0.15
0
190
-0.15
1.25±0.1
16P161620
18P181822
20P202024
21P212125
22P222226
22 AP22A3.022+0.20
0
280
-0.20
24P242430
25P252531
26P262632
28P282834
30P303036
32P323238
34P343440
38P383844
40P404046
42P424248
48P484854
50P505056

 

Technical Information

■Chemical Resistance (Reference)

TypeMaterialGasoline / Light OilWaterStrong AcidStrong AlkaliEtherKetone
NPA
NPB
Nitrile Rubber×
NPSW
NPSK
Silicon Rubber××
NPF
NPFH
Fluoro Rubber××
NPEGEthylene Propylene Rubber×
NPBRFluororesinSubject to O-ring
○= Good △ = Acceptable × = Not Acceptable
Since no data is available, general information is provided. Not guaranteed values.
Product Specifications
 

Part Number:  

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Part Number
NPA3
NPA4
NPA5
NPA6
NPA7
NPA8
NPA9
NPA10
NPA10A
NPA11
NPA11.2
NPA12
NPA12.5
NPA14
NPA15
NPA16
NPA18
NPA20
NPA21
NPA22
NPA22A
NPA22.4
NPA24
NPA25
NPA25.5
NPA26
NPA28
NPA29
NPA29.5
NPA30
NPA31
NPA31.5
NPA32
NPA34
NPA35
NPA35.5
NPA36
NPA38
NPA39
NPA40
NPA41
NPA42
NPA44
NPA45
NPA46
NPA48
NPA50
NPA50A
NPA52
NPA53
NPA55
NPA56
NPA58
NPA60
NPA62
NPA63
NPA65
NPA67
NPA70
NPA71
Part Number
Standard Unit Price
Minimum order quantityVolume Discount
Standard
Shipping Days
?
Inner Dia. do (or d)
(mm)
Wire Dia. W
(mm)
Material Application Material Code, JIS O.D.
(Ø)
JIS Nominal Number Applicable O-Ring Nominal Number

0.20 €

1 Available Same day

Stock

2.81.9Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P3-

0.18 €

1 Available Same day

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3.81.9Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P4-

0.18 €

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4.81.9Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P5-

0.18 €

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5.81.9Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P6-

0.18 €

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6.81.9Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P7-

0.18 €

1 Available Same day

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7.81.9Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P8-

0.18 €

1 Available Same day

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8.81.9Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P9-

0.18 €

1 Available Same day

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9.81.9Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P10-

0.20 €

1 Available Same day

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9.82.4Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P10A-

0.20 €

1 Available Same day

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10.82.4Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P11-

0.20 €

1 Available 5 Days 112.4Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P11.2-

0.20 €

1 Available Same day

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11.82.4Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P12-

0.20 €

1 Available Same day

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12.32.4Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P12.5-

0.20 €

1 Available Same day

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13.82.4Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P14-

0.32 €

1 Available Same day

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14.82.4Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P15-

0.32 €

1 Available Same day

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15.82.4Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P16-

0.32 €

1 Available Same day

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17.82.4Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P18-

0.32 €

1 Available Same day

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19.82.4Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P20-

0.32 €

1 Available Same day

Stock

20.82.4Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P21-

0.32 €

1 Available 5 Days 21.82.4Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P22-

0.38 €

1 Available 5 Days 21.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P22A-

0.38 €

1 Available Same day

Stock

22.13.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P22.4-

0.38 €

1 Available 5 Days 23.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P24-

0.48 €

1 Available Same day

Stock

24.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P25-

0.38 €

1 Available 5 Days 25.23.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P25.5-

0.45 €

1 Available 5 Days 25.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P26-

0.45 €

1 Available 5 Days 27.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P28-

0.45 €

1 Available 5 Days 28.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P29-

0.45 €

1 Available 5 Days 29.23.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P29.5-

0.45 €

1 Available 5 Days 29.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P30-

0.45 €

0.33 €

1 Available Same day

Stock

30.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P31-

0.50 €

1 Available 5 Days 31.23.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P31.5-

0.50 €

1 Available 5 Days 31.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P32-

0.50 €

1 Available 5 Days 33.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P34-

0.54 €

1 Available Same day

Stock

34.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P35-

0.54 €

1 Available 5 Days 35.23.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P35.5-

0.54 €

1 Available 5 Days 35.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P36-

0.60 €

1 Available Same day

Stock

37.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P38-

0.60 €

1 Available 5 Days 38.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P39-

0.60 €

1 Available 5 Days 39.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P40-

0.69 €

1 Available 5 Days 40.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P41-

0.60 €

1 Available 5 Days 41.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P42-

0.62 €

1 Available Same day

Stock

43.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P44-

0.62 €

1 Available 5 Days 44.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P45-

0.62 €

1 Available 5 Days 45.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P46-

0.62 €

1 Available 5 Days 47.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P48-

0.62 €

1 Available Same day

Stock

49.73.5Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P50-

0.71 €

1 Available 5 Days 49.75.7Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P50A-

0.75 €

1 Available 5 Days 51.65.7Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P52-

0.75 €

1 Available 5 Days 52.65.7Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P53-

0.75 €

1 Available 5 Days 54.65.7Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P55-

0.80 €

1 Available 5 Days 55.65.7Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P56-

0.80 €

1 Available 5 Days 57.65.7Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P58-

0.80 €

1 Available 5 Days 59.65.7Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P60-

0.85 €

1 Available 5 Days 61.65.7Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P62-

0.85 €

1 Available 5 Days 62.65.7Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P63-

0.91 €

1 Available 5 Days 64.65.7Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P65-

0.91 €

0.29 €

1 Available Same day

Stock

66.65.7Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P67-

0.91 €

1 Available 5 Days 69.65.7Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P70-

1.01 €

1 Available 5 Days 70.65.7Nitrile RubberMineral Oil Resistant / Heat Resistant / Abrasion ResistanceClass 1 A-P71-

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Basic information

Type P Series

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