Marine hardware lives in saltwater, sun and spray, so the washer has to resist corrosion, UV and weather without breaking down. We stock marine-suitable rubber washers in every OD, ID and thickness.
Best materials for marine use
For boat hardware, through-hull fittings and saltwater-exposed fasteners we recommend Neoprene and EPDM. Neoprene resists saltwater and weather and is a proven marine all-rounder, while EPDM adds excellent UV and ozone resistance for above-deck, sun-exposed fittings.
Common sizes
- 3/8" to 2" OD depending on fitting size
Key properties to look for
- Saltwater resistance
- UV resistance
- Weather resistance
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