Q-448 BUNA 70 Q RING

The QH70448 is an AS568-448 black Buna-N (Nitrile) 70 Shore A Quad-Ring built to an inside diameter of 9.475 in (240.67 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 10.025 in (254.64 mm). This quad-ring provides a dual sealing band on each contact face for improved reliability.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, most widely specified general-purpose sealing elastomer. This material stands up to petroleum-based oils, water, and many alcohols. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ketones or polar solvents are present. The profile itself contributes lower compressive load required to achieve a seal and a parting line located away from the sealing surface.

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

QH70448 ships individually. Unit weight is approximately 39.04 g and nominal inside diameter is listed as 9 1/2 inch. Review your operating media and conditions against this specification before installation.