Grainger item ZUSAH4X78 is a Buna-N (Nitrile) round O-ring with a 78 mm inner diameter and 4 mm cross-section
Grainger item ZUSAH4X78 is a Buna-N (Nitrile) round O-ring with a 78 mm inner diameter and 4 mm cross-section, designed for oil-resistant sealing applications.