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 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.
| Item # | Inside Diameter | Outside Diameter | Package Qty | |||
|---|---|---|---|---|---|---|
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374310
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8 mm
|
12 mm
|
100
|
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374311
|
8 mm
|
14 mm
|
100
|
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|
|
374312
|
10 mm
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14 mm
|
100
|
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|
|
374313
|
10 mm
|
16 mm
|
100
|
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|
|
374314
|
12 mm
|
16 mm
|
50
|
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|
|
374315
|
12 mm
|
18 mm
|
50
|
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|
|
374316
|
14 mm
|
18 mm
|
50
|
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|
|
374317
|
14 mm
|
20 mm
|
50
|
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|
|
374318
|
14 mm
|
22 mm
|
25
|
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|
|
374319
|
16 mm
|
20 mm
|
50
|
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|
|
374320
|
16 mm
|
22 mm
|
25
|
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|
|
374321
|
18 mm
|
24 mm
|
25
|
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|
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374322
|
20 mm
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26 mm
|
25
|
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|
|
374323
|
22 mm
|
29 mm
|
25
|
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|
|
374324
|
24 mm
|
30 mm
|
10
|
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|
|
374325
|
26 mm
|
32 mm
|
10
|
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|
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374326
|
28 mm
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34 mm
|
10
|
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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.
| Item # | Inside Diameter | Outside Diameter | Package Qty | |||
|---|---|---|---|---|---|---|
|
|
374304
|
17/64"
|
7/16"
|
50
|
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|
|
374305
|
21/64"
|
1/2"
|
50
|
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|
|
374306
|
25/64"
|
9/16"
|
50
|
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|
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374308
|
17/32"
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11/16"
|
50
|
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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.
| Item # | Inside Diameter | Outside Diameter | Package Qty | |||
|---|---|---|---|---|---|---|
|
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60780
|
25/64"
|
5/8"
|
10
|
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|
|
60781
|
29/64"
|
11/16"
|
10
|
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|
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60782
|
33/64"
|
13/16"
|
10
|
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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.
| Item # | Inside Diameter | Outside Diameter | Package Qty | |||
|---|---|---|---|---|---|---|
|
|
131197
|
1/4"
|
5/8"
|
25
|
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|
|
131198
|
5/16"
|
11/16"
|
25
|
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|
|
131199
|
3/8"
|
3/4"
|
25
|
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17 options | Item #:
374310
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4 options | Item #:
374304
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3 options | Item #:
60780
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3 options | Item #:
131197
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