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O-ring
Also called: rubber O-ring, O-ring seal
A round rubber ring that sits in a groove to stop water, oil or air from leaking.
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When you'd need this
- Water is seeping from a joint
- My O-ring is cracked
Measure and check before you buy
- Inside diameter and cross-section thickness
- Material (nitrile, silicone, etc.)
- Quantity
- Type of liquid or gas it touches
- Operating temperature and pressure
Safety: Caution: release the pressure before replacing. Leave gas, fuel and high-pressure systems to a professional.