O-Rings / P Series (NPA22.4)
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Product Details:
Manufacturer part number: NPA22.4
Brand: MISUMI
Price: 0.38 €
Delivery time: Same day
Technical Data:
Inner Dia. do (or d): 22.1 mm
Wire Dia. W: 3.5 mm
Material: Nitrile Rubber
Application: Mineral Oil Resistant / Heat Resistant / Abrasion Resistance
Material Code, JIS: Class 1 A
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Part Number
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NPA22.4
- Drawing / Specifications
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- Part Numbers
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Dimensional Drawings
P Series
NPA, NPB, NPSW, NPSK, NPF, NPFH, NPEG
Back-Up Ring
NPBR
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
Detailed Fitting Size
| Type | No, | 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 10 | 2.5 | 3.9 | 5.4 | 1.4 | 0.4 |
| 10 A to 22 | 3.2 | 4.4 | 6.0 | 1.8 | 0.4 | |
| 22 A to 50 | 4.7 | 6.0 | 7.8 | 2.7 | 0.8 | |
| 50 A to 80 | 7.5 | 9.0 | 11.5 | 4.6 | 0.9 | |
- (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] Material | JIS Material Identification Symbol | [H]Hardness (JIS Hs) | Color | Operable Temperature Range | Old JIS Symbol | Applications: | Features |
| NPA | Nitrile Rubber | NBR-70-1 | 70±5 | Black | －30 to 100°C | Class 1 A | Mineral Oil Resistant | Most representative material with superior oil / abrasion resistance and heat stability. |
| NPB | NBR-90 | 90±5 | －25 to 100°C | Class 1 B | ||||
| NPSW | Silicon Rubber | - | 50±5 | Milky White | －50 to 200°C | — | Heat Resistant | Having 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. |
| NPSK | VMQ-70 | 70±5 | Scarlet Red | －50 to 200°C | Class 4 C | |||
| NPF | Fluoro Rubber | FKM-70 | 70±5 | Black | －15 to 200°C | Class 4 D | Heat Resistant | Best in oil / chemical resistance and heat stability as synthetic rubber. Suitable for a wide range of applications. Chemical Resistance (Reference) |
| NPFH | FKM-90 | 90±5 | — | |||||
| NPEG | Ethylene Propylene Rubber | EPDM-70 | 70±5 | Black | －45 to 130°C | — | For weather resistant items | Excellent material in weather resistance, ozone resistance and electrical characteristics. |
| NPBR | Fluororesin | - | - | White | Subject to O-ring | — | For high voltage use | Used when the pressure resistance of O-ring is insufficient. |
[ ! ] 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 Number | JIS | W | I.D. | Matching Material | |||||||
| Type | No. | Nominal | do | NPA·NPB | NPSK·NPSW | NPF·NPFH | d | Tolerance | D | Tolerance | |
| Number | Tolerance | NPEG | Tolerance | ||||||||
| Tolerance | |||||||||||
| NPA | 3 | P3 | 1.9±0.08 | 2.8 | ±0.14 | ±0.21 | ±0.16 | 3 | 0 -0.05 | 6 | +0.05 0 |
| (Nitrile Rubber, Black) | 4 | P4 | 3.8 | 4 | 7 | ||||||
| 5 | P5 | 4.8 | ±0.15 | ±0.22 | ±0.18 | 5 | 8 | ||||
| 6 | P6 | 5.8 | 6 | 9 | |||||||
| NPB | 7 | P7 | 6.8 | ±0.16 | ±0.24 | ±0.19 | 7 | 10 | |||
| (Nitrile Rubber, Black) | 8 | P8 | 7.8 | 8 | 11 | ||||||
| 9 | P9 | 8.8 | ±0.17 | ±0.25 | ±0.20 | 9 | 12 | ||||
| 10 | P10 | 9.8 | 10 | 13 | |||||||
| NPSW | 10 A | P10A | 2.4±0.09 | 9.8 | 10 | 0 -0.06 | 14 | +0.06 0 | |||
| (Silicon Rubber, Milky White) | 11 | P11 | 10.8 | ±0.18 | ±0.27 | ±0.21 | 11 | 15 | |||
| 11.2 | P11.2 | 11.0 | 11.2 | 15.2 | |||||||
| 12 | P12 | 11.8 | ±0.19 | ±0.28 | ±0.22 | 12 | 16 | ||||
| NPSK | 12.5 | P12.5 | 12.3 | 12.5 | 16.5 | ||||||
| (Silicon Rubber, Vermilion) | 14 | P14 | 13.8 | 14 | 18 | ||||||
| 15 | P15 | 14.8 | ±0.20 | ±0.30 | ±0.24 | 15 | 19 | ||||
| 16 | P16 | 15.8 | 16 | 20 | |||||||
| NPF | 18 | P18 | 17.8 | ±0.21 | ±0.31 | ±0.25 | 18 | 22 | |||
| (Fluoro Rubber, Black) | 20 | P20 | 19.8 | ±0.22 | ±0.33 | ±0.26 | 20 | 24 | |||
| 21 | P21 | 20.8 | ±0.23 | ±0.34 | ±0.27 | 21 | 25 | ||||
| 22 | P22 | 21.8 | ±0.24 | ±0.36 | ±0.28 | 22 | 26 | ||||
| NPFH | 22 A | P22A | 3.5±0.1 | 21.7 | 22 | 0 -0.08 | 28 | +0.08 0 | |||
| (Fluoro Rubber, Black) | 22.4 | P22.4 | 22.1 | 22.4 | 28.4 | ||||||
| 24 | P24 | 23.7 | 24 | 30 | |||||||
| 25 | P25 | 24.7 | ±0.25 | ±0.37 | ±0.30 | 25 | 31 | ||||
| NPEG | 25.5 | P25.5 | 25.2 | 25.5 | 31.5 | ||||||
| (Ethylene Propylene Rubber, Black) | 26 | P26 | 25.7 | ±0.26 | ±0.39 | ±0.31 | 26 | 32 | |||
| 28 | P28 | 27.7 | ±0.28 | ±0.42 | ±0.33 | 28 | 34 | ||||
| 29 | P29 | 28.7 | ±0.29 | ±0.43 | ±0.34 | 29 | 35 | ||||
| 29.5 | P29.5 | 29.2 | 29.5 | 35.5 | |||||||
| 30 | P30 | 29.7 | 30 | 36 | |||||||
| 31 | P31 | 30.7 | ±0.30 | ±0.45 | ±0.36 | 31 | 37 | ||||
| 31.5 | P31.5 | 31.2 | ±0.31 | ±0.46 | ±0.37 | 31.5 | 37.5 | ||||
| 32 | P32 | 31.7 | 32 | 38 | |||||||
| 34 | P34 | 33.7 | ±0.33 | ±0.49 | ±0.39 | 34 | 40 | ||||
| 35 | P35 | 34.7 | ±0.34 | ±0.51 | ±0.40 | 35 | 41 | ||||
| 35.5 | P35.5 | 35.2 | 35.5 | 41.5 | |||||||
| 36 | P36 | 35.7 | 36 | 42 | |||||||
| 38 | P38 | 37.7 | ±0.37 | ±0.55 | ±0.44 | 38 | 44 | ||||
| 39 | P39 | 38.7 | 39 | 45 | |||||||
| 40 | P40 | 39.7 | 40 | 46 | |||||||
| 41 | P41 | 40.7 | ±0.38 | ±0.57 | ±0.45 | 41 | 47 | ||||
| 42 | P42 | 41.7 | ±0.39 | ±0.58 | ±0.48 | 42 | 48 | ||||
| 44 | P44 | 43.7 | ±0.41 | ±0.61 | ±0.49 | 44 | 50 | ||||
| 45 | P45 | 44.7 | 45 | 51 | |||||||
| 46 | P46 | 45.7 | ±0.42 | ±0.63 | ±0.50 | 46 | 52 | ||||
| 48 | P48 | 47.7 | ±0.44 | ±0.66 | ±0.52 | 48 | 54 | ||||
| 50 | P50 | 49.7 | ±0.45 | ±0.67 | ±0.54 | 50 | 56 | ||||
| 50 A | P50A | 5.7±0.13 | 0 -0.10 | 60 | +0.10 0 | ||||||
| 52 | P52 | 51.6 | ±0.47 | ±0.70 | ±0.56 | 52 | 62 | ||||
| 53 | P53 | 52.6 | ±0.48 | ±0.72 | ±0.57 | 53 | 63 | ||||
| 55 | P55 | 54.6 | ±0.49 | ±0.73 | ±0.58 | 55 | 65 | ||||
| 56 | P56 | 55.6 | ±0.50 | ±0.75 | ±0.60 | 56 | 66 | ||||
| 58 | P58 | 57.6 | ±0.52 | ±0.78 | ±0.62 | 58 | 68 | ||||
| 60 | P60 | 59.6 | ±0.53 | ±0.79 | ±0.63 | 60 | 70 | ||||
| 62 | P62 | 61.6 | ±0.55 | ±0.82 | ±0.66 | 62 | 72 | ||||
| 63 | P63 | 62.6 | ±0.56 | ±0.84 | ±0.67 | 63 | 73 | ||||
| 65 | P65 | 64.6 | ±0.57 | ±0.85 | ±0.68 | 65 | 75 | ||||
| 67 | P67 | 66.6 | ±0.59 | ±0.88 | ±0.70 | 67 | 77 | ||||
| 70 | P70 | 69.6 | ±0.61 | ±0.91 | ±0.73 | 70 | 80 | ||||
| 71 | P71 | 70.6 | ±0.62 | ±0.93 | ±0.74 | 71 | 81 | ||||
| 75 | P75 | 74.6 | ±0.65 | ±0.97 | ±0.78 | 75 | 85 | ||||
| 80 | P80 | 79.6 | ±0.69 | ±1.03 | ±0.82 | 80 | 90 | ||||
JIS B 2407 Back-Up Rings (For the P Series, Bias Cut)
| Part Number | Applicable O-rings Nominal Number | W | d | D | T | |||||
| Type | No. | |||||||||
| NPBR (Fluororesin, White) | 15 | P15 | 2.0 | +0.03 －0.05 | 15 | +0.15 0 | 19 | 0 －0.15 | 1.25 | ±0.1 |
| 16 | P16 | 16 | 20 | |||||||
| 18 | P18 | 18 | 22 | |||||||
| 20 | P20 | 20 | 24 | |||||||
| 21 | P21 | 21 | 25 | |||||||
| 22 | P22 | 22 | 26 | |||||||
| 22 A | P22A | 3.0 | 22 | +0.20 0 | 28 | 0 －0.20 | ||||
| 24 | P24 | 24 | 30 | |||||||
| 25 | P25 | 25 | 31 | |||||||
| 26 | P26 | 26 | 32 | |||||||
| 28 | P28 | 28 | 34 | |||||||
| 30 | P30 | 30 | 36 | |||||||
| 32 | P32 | 32 | 38 | |||||||
| 34 | P34 | 34 | 40 | |||||||
| 38 | P38 | 38 | 44 | |||||||
| 40 | P40 | 40 | 46 | |||||||
| 42 | P42 | 42 | 48 | |||||||
| 48 | P48 | 48 | 54 | |||||||
| 50 | P50 | 50 | 56 | |||||||
Technical Information
■Chemical Resistance (Reference)
| Type | Material | Gasoline / Light Oil | Water | Strong Acid | Strong Alkali | Ether | Ketone |
| NPA NPB | Nitrile Rubber | △ | ○ | △ | ○ | △ | × |
| NPSW NPSK | Silicon Rubber | × | ○ | × | ○ | △ | ○ |
| NPF NPFH | Fluoro Rubber | ○ | ○ | × | ○ | △ | × |
| NPEG | Ethylene Propylene Rubber | × | ○ | ○ | ○ | ○ | ○ |
| NPBR | Fluororesin | Subject to O-ring | |||||
Since no data is available, general information is provided. Not guaranteed values.
Product SpecificationsPart Number:
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Part Number
|
|---|
| NPA22.4 |
| Part Number |
Standard Unit Price
| Minimum order quantity | Volume Discount | 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
0.38 € | 1 | Available |
Same day
Stock | 22.1 | 3.5 | Nitrile Rubber | Mineral Oil Resistant / Heat Resistant / Abrasion Resistance | Class 1 A | - | P22.4 | - |
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Basic information
| Type | P Series |
|---|
This page is O-Rings / P Series, part number NPA22.4.
You can find the detail information about specifications and dimensions on part number NPA22.4.
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Basic Attributes
-
Application
- Mineral Oil Resistant
- Heat Resistant
- Abrasion Resistance
- High Pressure Use
- Chemical Resistant
- For Weather Resistance
- Cold Resistant
-
Applicable O-Ring Nominal Number
-
Type
- NPA
- NPB
- NPBR
- NPEG
- NPF
- NPFH
- NPSK
- NPSW
-
Inner Dia. do (or 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
- 15.8
- 16
- 17.8
- 18
- 19.8
- 20
- 20.8
- 21
- 21.7
- 21.8
- 22
- 22.1
- 23.7
- 24
- 24.7
- 25
- 25.2
- 25.7
- 26
- 27.7
- 28
- 28.7
- 29.2
- 29.7
- 30
- 30.7
- 31.2
- 31.7
- 32
- 33.7
- 34
- 34.7
- 35.2
- 35.7
- 37.7
- 38
- 38.7
- 39.7
- 40
- 40.7
- 41.7
- 42
- 43.7
- 44.7
- 45.7
- 47.7
- 48
- 49.7
- 50
- 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
-
Wire Dia. W(mm)
-
Material
- Nitrile Rubber
- Ethylene Propylene Rubber
- Silicon Rubber
- Fluororubber
-
JIS Nominal Number
-
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Optional Attributes
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Variation of this product
| Part Number |
|---|
| NPA11.2 |
| NPA12 |
| NPA12.5 |
| NPA22A |
| NPA24 |
| NPA25 |
| Part Number | Standard Unit Price | Minimum order quantity | Volume 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 | 5 Days | 11 | 2.4 | Nitrile Rubber | Heat Resistant / Abrasion Resistance / Mineral Oil Resistant | Class 1 A | - | P11.2 | - | |
0.20 € | 1 | Available |
Same day
Stock | 11.8 | 2.4 | Nitrile Rubber | Heat Resistant / Abrasion Resistance / Mineral Oil Resistant | Class 1 A | - | P12 | - | |
0.20 € | 1 | Available |
Same day
Stock | 12.3 | 2.4 | Nitrile Rubber | Heat Resistant / Abrasion Resistance / Mineral Oil Resistant | Class 1 A | - | P12.5 | - | |
0.38 € | 1 | Available | 5 Days | 21.7 | 3.5 | Nitrile Rubber | Heat Resistant / Abrasion Resistance / Mineral Oil Resistant | Class 1 A | - | P22A | - | |
0.38 € | 1 | Available | 5 Days | 23.7 | 3.5 | Nitrile Rubber | Heat Resistant / Abrasion Resistance / Mineral Oil Resistant | Class 1 A | - | P24 | - | |
0.48 € | 1 | Available |
Same day
Stock | 24.7 | 3.5 | Nitrile Rubber | Heat Resistant / Abrasion Resistance / Mineral Oil Resistant | Class 1 A | - | P25 | - |
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