These 90 durometer Buna-N O-rings are a harder compound than the standard 70 durometer ring. The extra stiffness resists extrusion and wear in high-pressure spots like regulators, valves, and tank connections.
Features
- 90 durometer Buna-N (nitrile) rubber
- Firmer than standard 70 durometer O-rings
- Good resistance to oils and lubricants
- Sold individually by dash size
Replace a 90 durometer O-ring with another 90. A softer ring can extrude and fail under high pressure. Always degas before servicing.
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