Copper Washers

Stop seepage and keep connections tight when heat and vibration are trying to win. Copper washers and gaskets crush to seal drain plugs, fuel and hydraulic fittings and electrical lugs. Choose DIN 7603 sealing washers for fluid systems or fender styles for more bearing area. Pick 1/32" or 1/16" thick to match your stack-up.

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Copper Sealing Washers

Copper Washers

Copper Gaskets

Copper Fender Washers

Copper Sealing Washers

Copper sealing washers made of copper, available in metric inside/outside diameters and sized to DIN 7603. They provide dependable seals for oil and transmission drain plugs, fuel and hydraulic systems and resist leakage in automotive, truck, marine and industrial engine applications.

Inside Diameter	Outside Diameter	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
8 mm	12 mm	100	374310	Log in to view price
8 mm x 12 mm Copper Sealing Washer - 100 Pack Item #: 374310 Package Weight: 0.1 lbs View Product Details Log in to Order
8 mm	14 mm	100	374311	Log in to view price
8 mm x 14 mm Copper Sealing Washer - 100 Pack Item #: 374311 Package Weight: 0.3 lbs View Product Details Log in to Order
10 mm	14 mm	100	374312	Log in to view price
10 mm x 14 mm Copper Sealing Washer - 100 Pack Item #: 374312 Package Weight: 0.2 lbs View Product Details Log in to Order
10 mm	16 mm	100	374313	Log in to view price
10 mm x 16 mm Copper Sealing Washer - 100 Pack Item #: 374313 Package Weight: 0.2 lbs View Product Details Log in to Order
12 mm	16 mm	50	374314	Log in to view price
12 mm x 16 mm Copper Sealing Washer - 50 Pack Item #: 374314 Package Weight: 0.1 lbs View Product Details Log in to Order
12 mm	18 mm	50	374315	Log in to view price
12 mm x 18 mm Copper Sealing Washer - 50 Pack Item #: 374315 Package Weight: 0.2 lbs View Product Details Log in to Order
14 mm	18 mm	50	374316	Log in to view price
14 mm x 18 mm Copper Sealing Washer - 50 Pack Item #: 374316 Package Weight: 0.1 lbs View Product Details Log in to Order
14 mm	20 mm	50	374317	Log in to view price
14 mm x 20 mm Copper Sealing Washer - 50 Pack Item #: 374317 Package Weight: 0.2 lbs View Product Details Log in to Order
14 mm	22 mm	25	374318	Log in to view price
14 mm x 22 mm Copper Sealing Washer - 25 Pack Item #: 374318 Package Weight: 0.3 lbs View Product Details Log in to Order
16 mm	20 mm	50	374319	Log in to view price
16 mm x 20 mm Copper Sealing Washer - 50 Pack Item #: 374319 Package Weight: 0.1 lbs View Product Details Log in to Order
16 mm	22 mm	25	374320	Log in to view price
16 mm x 22 mm Copper Sealing Washer - 25 Pack Item #: 374320 Package Weight: 0.1 lbs View Product Details Log in to Order
18 mm	24 mm	25	374321	Log in to view price
18 mm x 24 mm Copper Sealing Washer - 25 Pack Item #: 374321 Package Weight: 0.2 lbs View Product Details Log in to Order

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Copper Washers

Copper flat washers made from copper, offered in common SAE bolt sizes with 1/32" thickness and standard inside/outside diameters. The soft conductive material resists high heat and improves electrical contact, suitable for electrical connections and heat-exposed assemblies.

Inside Diameter	Outside Diameter	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
17/64"	7/16"	50	374304	Log in to view price
1/4" Copper Washer - 50 Pack Item #: 374304 Package Weight: 0.1 lbs View Product Details Log in to Order
21/64"	1/2"	50	374305	Log in to view price
5/16" Copper Washer - 50 Pack Item #: 374305 Package Weight: 0.1 lbs View Product Details Log in to Order
25/64"	9/16"	50	374306	Log in to view price
3/8" Copper Washer - 50 Pack Item #: 374306 Package Weight: 0.1 lbs View Product Details Log in to Order
17/32"	11/16"	50	374308	Log in to view price
1/2" Copper Washer - 50 Pack Item #: 374308 Package Weight: 0.1 lbs View Product Details Log in to Order

Copper Gaskets

Copper gaskets made from solid copper, 1/16" thick, designed for high‑heat and electrical sealing applications. Flat ring style with SAE measurements and specific inside/outside diameters to match bolt fittings; copper construction provides excellent conductivity and heat resistance.

Inside Diameter	Outside Diameter	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
25/64"	5/8"	10	60780	Log in to view price
3/8" x 25/64" x 5/8" Copper Gasket - 10 Pack Item #: 60780 Package Weight: 0.1 lbs View Product Details Log in to Order
29/64"	11/16"	10	60781	Log in to view price
7/16" x 29/64" x 11/16" Copper Gasket - 10 Pack Item #: 60781 Package Weight: 0.1 lbs View Product Details Log in to Order
33/64"	13/16"	10	60782	Log in to view price
1/2" x 33/64" x 13/16" Copper Gasket - 10 Pack Item #: 60782 Package Weight: 0.1 lbs View Product Details Log in to Order

Copper Fender Washers

Copper fender washers made of solid copper with 1/16" thickness and SAE measurements across multiple bolt sizes. Larger OD provides increased load distribution while malleable copper helps form a tight seal and resists corrosion in electrical and plumbing use.

Inside Diameter	Outside Diameter	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1/4"	5/8"	25	131197	Log in to view price
3/16" Copper Washer - 25 Pack Item #: 131197 Package Weight: 0.1 lbs View Product Details Log in to Order
5/16"	11/16"	25	131198	Log in to view price
1/4" Copper Washer - 25 Pack Item #: 131198 Package Weight: 0.1 lbs View Product Details Log in to Order
3/8"	3/4"	25	131199	Log in to view price
5/16" Copper Washer - 25 Pack Item #: 131199 Package Weight: 0.2 lbs View Product Details Log in to Order