Made of Buna-N, these backup rings resist grease, petroleum fluids, and motor oil.

Avoid common O-ring failure in dynamic applications—the square base of these seals prevents twisting, while backup rings protect against extrusion.

Replace the standard O-ring/backup ring combination with a more reliable alternative—these head seals resist twisting and remain stable even in applications with fluctuating pressure.

Rated for pressure up to 10,000 psi, these seals withstand the highest pressure of our buffering seals.