A metal washer with a bonded rubber inner ring, used to create a leak-proof seal on bolts and fittings.
Specifications
- price is per 1pc
- Size: 20mm (M20)
- Material: Steel + Nitrile rubber (NBR)
OD: ~27–28 mm
- Thickness: ~1.5–2.5 mm
- Use: Hydraulic & fluid sealing
- Key Feature: Prevents oil/water leakage under pressure.