Neoprene Rubber Washers — Complete Guide
Neoprene (polychloroprene) is one of the most versatile rubber materials available, making neoprene rubber washers a top choice across dozens of industries. This guide covers everything you need to know before selecting neoprene washers for your application.
What Is Neoprene Rubber?
Neoprene is a synthetic rubber developed for its excellent balance of physical toughness and resistance to degradation. Unlike natural rubber, neoprene holds up well against oils, weathering, and moderate chemicals — making it suitable for both indoor and outdoor use.
Neoprene Washer Properties
- Temperature range: -40°F to +250°F (-40°C to +121°C)
- Oil resistance: Good
- Weather/ozone resistance: Excellent
- Water resistance: Excellent
- Compression set: Good
- Hardness: 40–80 Shore A
Best Applications for Neoprene Washers
- Plumbing and pipe fittings
- HVAC systems and ductwork
- Marine and outdoor hardware
- Electrical enclosures
- Automotive weatherstripping and seals
- General industrial sealing and vibration dampening
When Not to Use Neoprene
Avoid neoprene washers in applications involving strong oxidizing acids, ketones, or esters. For high-temperature applications above 250°F, consider silicone rubber washers instead. For aggressive chemical environments, Viton washers offer superior resistance.
Neoprene vs Other Materials
See our full rubber washer material comparison guide to compare neoprene against EPDM, Nitrile, Silicone, Viton, and more side by side.
Shop Neoprene Rubber Washers
We stock neoprene washers in over 1,700 size combinations — every OD from 5/16" to 4", every ID from 1/8" to 1-1/2", and thicknesses from 1/16" to 1/2". Browse all neoprene washer sizes →