568-242 BUNA 70 SQUARE CUT RINGS

This quad-ring is supplied in AS568-242 black Buna-N (Nitrile) 70 Shore A square profile measuring an inside diameter of 3.984 in (101.19 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.262 in (108.25 mm), catalogued under part number SH70242. It seats in a standard o-ring gland while offering improved dynamic performance.

Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. This material stands up to propane and butane, many alcohols, and water. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ketones or automotive brake fluid are present.

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

SH70242 ships individually. Unit weight is approximately 4.6708 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.