568-438 BUNA 70 SQUARE CUT RINGS

SH70438 is an AS568-438 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring built to an inside diameter of 6.225 in (158.12 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.775 in (172.09 mm). In service, this quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, most widely specified general-purpose sealing elastomer. This material stands up to water, greases and lubricants, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving ozone and direct sunlight or ketones call for a different compound.

Common environments for this compound include agricultural equipment, hydraulic and pneumatic systems, and construction equipment.

SH70438 ships individually. Unit weight is approximately 24.506 g and nominal inside diameter is listed as 6 1/4 inch. Review your operating media and conditions against this specification before installation.