Neoprene Flat Washers - Rubber Sealing Washers

Neoprene flat washers provide excellent sealing, vibration dampening, and weather resistance in fastener assemblies exposed to oils, ozone, and moderate chemicals. They are a popular rubber washer choice for outdoor equipment, HVAC, marine, and industrial sealing applications. Superior Washer & Gasket Corp manufactures neoprene washers in standard and custom sizes.

As an ISO 9001:2015 certified rubber and synthetic washer manufacturer, we produce neoprene, EPDM, silicone, and other rubber washers in a full range of durometers and dimensions. Custom neoprene sealing washers are available from stock or manufactured to your OD, ID, and thickness-all made in the U.S.A.

Neoprene rubber for oil, ozone, and weather resistance
Sealing and vibration dampening properties
Standard and custom neoprene washer sizes
ISO 9001:2015 certified manufacturing
Made in the U.S.A.

Showing 1–50 of 52 products

SKU	ID	OD	Thickness	Material	ID TOL	OD TOL	Quantity
850-10-031	ID 0.0	OD 0.211	Thickness 0.031	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-11-062	ID 0.0	OD 0.499	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-12-062	ID 0.098	OD 0.25	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-13-062	ID 0.157	OD 0.373	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-14-062	ID 0.161	OD 0.43	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-15-250	ID 0.184	OD 0.494	Thickness 0.25	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-16-062	ID 0.202	OD 0.5	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-17-031	ID 0.206	OD 0.372	Thickness 0.031	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-18-062	ID 0.225	OD 0.497	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-19-032	ID 0.253	OD 0.538	Thickness 0.032	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-20-062	ID 0.281	OD 0.632	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-21-032	ID 0.285	OD 0.56	Thickness 0.032	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-22-125	ID 0.312	OD 1.5	Thickness 0.125	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-23-187	ID 0.337	OD 0.763	Thickness 0.187	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-24-187	ID 0.343	OD 0.75	Thickness 0.187	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-25-031	ID 0.376	OD 0.562	Thickness 0.031	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-26-031	ID 0.382	OD 0.56	Thickness 0.031	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-27-032	ID 0.384	OD 0.495	Thickness 0.032	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-28-031	ID 0.386	OD 0.499	Thickness 0.031	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-29-062	ID 0.406	OD 0.75	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-30-062	ID 0.407	OD 1.0	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-31-031	ID 0.41	OD 0.654	Thickness 0.031	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-32-031	ID 0.41	OD 0.813	Thickness 0.031	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-33-125	ID 0.418	OD 1.127	Thickness 0.125	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-34-062	ID 0.437	OD 0.88	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-35-093	ID 0.437	OD 1.125	Thickness 0.093	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-36-031	ID 0.47	OD 0.592	Thickness 0.031	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-37-031	ID 0.472	OD 0.593	Thickness 0.031	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-38-031	ID 0.473	OD 0.594	Thickness 0.031	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-39-250	ID 0.5	OD 1.5	Thickness 0.25	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-40-031	ID 0.525	OD 0.749	Thickness 0.031	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-41-125	ID 0.561	OD 1.259	Thickness 0.125	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-42-062	ID 0.574	OD 1.128	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-43-062	ID 0.597	OD 0.812	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-44-062	ID 0.753	OD 1.218	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-45-062	ID 0.88	OD 1.117	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-46-062	ID 0.89	OD 1.12	Thickness 0.062	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-47-125	ID 1.375	OD 1.687	Thickness 0.125	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-49-125	ID 0.252	OD 1.24	Thickness 0.125	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-50-060	ID 0.375	OD 0.625	Thickness 0.06	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-51-090	ID 0.431	OD 0.812	Thickness 0.09	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-53-093	ID 0.29	OD 0.562	Thickness 0.093	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-54-245	ID 0.314	OD 2.247	Thickness 0.245	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-56-187	ID 0.248	OD 0.619	Thickness 0.187	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-57-187	ID 0.245	OD 0.634	Thickness 0.187	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-58-055	ID 0.625	OD 0.877	Thickness 0.055	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-59-091	ID 0.737	OD 1.5	Thickness 0.091	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-62-100	ID 0.297	OD 0.565	Thickness 0.1	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-63-092	ID 0.354	OD 0.629	Thickness 0.092	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity
850-64-120	ID 0.125	OD 0.877	Thickness 0.12	Material Neoprene	ID TOL +-.010	OD TOL +-.010	Quantity

Neoprene & Rubber Flat Washer Frequently Asked Questions

Below are answers to some of the most common questions about neoprene rubber washers.

What are neoprene flat washers?
Neoprene flat washers are manufactured from polychloroprene (neoprene) synthetic rubber. As a type of rubber washer, neoprene offers good resistance to oils, weather, ozone, and moderate chemical exposure, and its compressibility makes neoprene rubber washers ideal for sealing, vibration damping, and cushioning applications across a wide temperature range.

What are neoprene rubber washers used for?
Neoprene washers are commonly used as sealing washers under bolt heads and screws in roofing, HVAC, outdoor structures, plumbing, and marine applications. Their rubber compressibility creates a watertight seal when compressed. They are also used as anti-vibration isolators between metal components and as cushioning washers to protect surfaces.

What temperature range can neoprene rubber washers handle?
Neoprene rubber maintains its properties from approximately -40 degrees F to +250 degrees F (-40 degrees C to +121 degrees C), making it suitable for outdoor and moderate-temperature industrial applications. For higher temperatures, EPDM or silicone rubber washers are typically specified instead.

Can you make custom neoprene rubber washers?
Yes. Superior Washer manufactures custom neoprene washers to your OD, ID, and thickness specifications. Contact us via the Quick Quote form or by phone.

Are your neoprene flat washers made in the USA?
Yes. All neoprene flat washers are manufactured in the United States under our ISO 9001:2015 certified Quality Management System. Material certifications are available upon request.

Neoprene is our primary rubber washer material for sealing and vibration damping applications. Browse the full flat washers collection to see all available materials.