Earl's Stat-O-Seal - 0.438 in ID - Rubber O-Ring (Pair) H764009 Innermost layer: 95% Meta Aramid

Innermost layer: 95% Meta Aramid

1981-1981 Dodge D350

They come attractively skin packaged in (10) packs

Precision machined

Earl's Stat-O-Seal - 0.438 in ID - Rubber O-Ring (Pair) H764009 Innermost layer: 95% Meta AramidThe Stat O Seal is very simply the best sealing washer available. It consists of a synthetic rubber "O" ring mechanically locked to the I. D. of an aluminum washer. When tightened the "O" ring is compressed, forcing the sealing surfaces around the bolt shank. They will form a positive seal over a temperature range of 85? to +450? F. They provide the advantages of an "O" ring type seal without the necessity of machining "O" ring grooves into the part.