Washer, Copper
Coleman, Sanborn Pumps & Parts

Price: $11.59
Found under the following brands:
A1 Coupling & Hose, Popular Brands, ProForce, Coleman Powermate Sanborn, Craftsman, Industrial Air, Kobalt, Morgan, Porter Cable, Task Force
This part is available in the following kits
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OVERHAUL KIT SC23 (Less Valves)
Price: $257.01
Note: These washers can be aluminum OR copper.