Earl's Stat-O-Seal Washers Inside Diameter: 7/8" Fits -10AN Fittings

Earl's Stat-O-Seal Sealing Washers consist of a synthetic rubber O-ring (capable of withstanding -85° to +450° F) mechanically locked to the inside diameter of an aluminum washer. When tightened, the rubber at the center of the washer is compressed. This forces the sealing surfaces around the bolt shank to provide the advantages of an O-ring seal without machining grooves into the part.

Earl's Stat-O-Seal Sealing Washers are quite simply the best sealing washer available. In any application where you now use a copper or aluminum sealing washer, Stat-O-Seals will do a better job!