O-Rings/S Series
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MISUMI
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O-Rings/S Series
The O Ring is a commonly employed sealing component found in automation machines across a wide range of industries.
[Feature]
● Inner Diameter Minimum/ Maximum (mm.) : 2.5 to 49.5
● Thickness (mm.) : 1.5 and 2
● Material and Operating Temperature Range (℃)
Nitrile Rubber -> -30 to 100 ℃
Silicone Rubber -> -50 to 200 ℃
Fluoro Rubber -> -15 to 200 ℃
[Application]
O-rings are utilized across multiple industries to prevent the leakage of fluids or gases between two components
■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 Ring | Back-Up Rings on Both Sides Ring | ||||
| NSA·NSB·NSSW NSSK·NSF·NSFH | 3 to 22 | 2.5 | — | — | 1.0 | 0.2 |
| 22.4 to 50 | 2.7 | — | — | 1.5 | 0.4 | |
For Surface Mounting
For Fixing Cylinder Surface
No Back-Up Ring
For External Pressure
For Internal Pressure
| Type | [ M ] Material | [ H ] Hardness (JIS Hs) | Color | Operation Temperature Range | Usage | Features |
| NSA | Nitrile Rubber | 70±5 | Black | -30~100°C | Mineral Oil Resistant | Most representative material with superior oil / abrasion resistance and heat stability. |
| NSB | Nitrile Rubber | 90±5 | Black | -25~100°C | ||
| NSSW | Silicon Rubber | 50±5 | Milky White | -50~200°C | Heat Resistant | Having excellent high and low temperature resistances, this material has the widest range of operating temperatures among synthetic rubbers. It is suitable for food-related applications. |
| NSSK | Silicon Rubber | 70±5 | Scarlet Red | -50~200°C | Heat Resistant | |
| NSF | Fluoro Rubber | 70±5 | Black | -15~200°C | Best in oil / chemical resistance and heat stability as synthetic rubber. Suitable for a wide range of applications. | |
| NSFH | Fluoro Rubber | 90±5 | Black | -15~200°C | Heat Resistant |