Earl's Stat-O-Seal - 0.438 in ID - Rubber O-Ring (Pair) Helmet Race Receiver Mount Mopar B / RB-Series /

Mopar B / RB-Series / Mopar Early Hemi

3400-3800 RPM Stall

Designed specifically for the drag-strip and featuring superior fire protection with its SFI rating of 3

GM Gen II/Mark IV

Earl's Stat-O-Seal - 0.438 in ID - Rubber O-Ring (Pair) Helmet Race Receiver Mount Mopar B / RB-Series /The 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.