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1,746 sizes in 7 materials. Pick OD, ID and thickness to jump straight to the product.
Rubberwasherwarehouse
Rubber Washer 3/4" OD x 1/2" ID x 1/16" Thick
Regular priceFrom $0.26Unit priceIn stock (1555 units)
Rubberwasherwarehouse
Rubber Washer 3/4" OD x 3/8" ID x 1/16" Thick
Regular priceFrom $0.26Unit priceIn stock (1885 units)
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Rubber Washer 1/2" OD x 1/4" ID x 1/16" Thick
Regular priceFrom $0.19Unit price
Rubberwasherwarehouse
Rubber Washer 1/2" OD x 1/4" ID x 3/32" Thick
Regular priceFrom $0.29Unit priceIn stock (88 units)
Rubberwasherwarehouse
Rubber Washer 1/2" OD x 3/16" ID x 1/16" Thick
Regular priceFrom $0.19Unit priceIn stock (978 units)
Rubberwasherwarehouse
Rubber Washer 5/8" OD x 1/4" ID x 3/32" Thick
Regular priceFrom $0.33Unit priceIn stock (90 units)
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Rubber Washer 7/16" OD x 3/16" ID x 1/16" Thick
Regular price $4.99Unit price
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Rubberwasherwarehouse
Rubber Washer 5/8" OD x 5/16" ID x 1/16" Thick
Regular priceFrom $0.22Unit priceIn stock (1000 units)
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Rubber Washer 9/16" OD x 5/16" ID x 1/16" Thick
Regular price $4.99Unit price
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Rubber Washer 11/16" OD x 3/8" ID x 1/16" Thick
Regular price $4.99Unit price
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Rubberwasherwarehouse
Rubber Washer 3/16" OD x 3/32" ID x 1/32" Thick
Regular priceFrom $0.45Unit priceIn stock (100 units)
About Electrical & Enclosure Rubber Washers
Small, thin rubber washers for electrical and electronics work — panel and enclosure sealing, cable gland backing, standoff insulation, PCB mounting and junction box hardware. This collection concentrates on compact ODs from 5/16" to 1" in 1/16" and 3/32" thicknesses, sized for the small fasteners electrical work uses.
Rubber is naturally non-conductive, making these washers double as insulators and anti-vibration pads for sensitive equipment. Silicone is the electronics favorite for its temperature range and stability; Neoprene and EPDM seal outdoor enclosures. See the electrical and electronics guide, then locate exact dimensions with the Size Finder or the complete size chart.
FAQ
Are rubber washers electrically insulating?
Yes — all seven materials stocked here are non-conductive, isolating fasteners from panels and damping vibration on mounted electronics. Silicone offers the widest temperature range for hot-running equipment.