O-Ring
The O-ring is a ring-shaped packing with a circular cross-section (O type) and it generally exhibits sealing functionality through stress generated by mounting it in a groove and moderately compressing it.
Sealing Business
Features
- Because the volume of the mounting section is small, only a small space is required.
- Easy installation and removal due to the simple shape.
- Options available for nearly any use with the wide variety of material types.
- Excellent sealing function even if pressure alternates between both sides.
- Excellent cost performance compared to other packings.
- With our abundant product stock, we can promise quick delivery.
Chart of O-Ring Rubber Characteristics for Usage Requirements
O-ring applications require rubber characteristics such as excellent elasticity, compression set, abrasion resistance, heat resistance, and durability without being affected by liquids or gases. However, since no material is ideal for all conditions, the most appropriate materials must be chosen according to the application. AIR WATER MACH has a large selection of O-ring types that can be used for a variety of purposes.Types and characteristics of O-ring materials
| JIS symbol or AIR WATER MACH material number | Rubber type | Feature |
|---|---|---|
| NBR-70-1 (1A) | Nitrile rubber | A general material for hydraulic and pneumatic applications with excellent oil resistance |
| NBR-90 (1B) | Nitrile rubber | Similar to 1A but with excellent pressure resistance |
| NBR-70-2 (2) | Nitrile rubber | Excellent gasoline resistance |
| EPDM-70 (3) | Ethylene propylene rubber | Excellent resistance to brake oil and animal and vegetable oils |
| VMQ-70 (4C) | Silicone rubber | Excellent heat and cold resistance for use over a wide temperature range |
| FKM-70 (4D) | Fluororubber | Excellent heat and oil resistance. |
| E7-512 | Ethylene propylene rubber | Excellent weather and water resistance. |
| C7-130 | Chloroprene rubber | Overall balanced physical properties |
| F7-925 | Fluororubber | Excellent chemical and steam resistance suitable for food-related applications |
| F7-305 | Fluororubber | Fluororubber with excellent cold resistance |
| F7-644 | Fluororubber | Excellent alkali resistance |
| H7-541 | Hydrogenated nitrile rubber | Better heat resistance than nitrile rubber |
| Q7-103 | Fluorosilicone rubber | Excellent cold and fuel oil resistance |
| PB-70 | Perfluoroelastomer | Chemical resistance similar to PTFE |