568-384 BUNA 70 SQUARE CUT RINGS

The SH70384 is an AS568-384 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring built to an inside diameter of 14.975 in (380.37 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 15.395 in (391.03 mm). This quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

It resists many alcohols, hydraulic fluids, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where ketones or polar solvents are present.

Maintenance and OEM teams specify it across agricultural equipment, general industrial maintenance, and fluid power.

SH70384 ships individually. Nominal inside diameter is listed as 15 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.