Q-216 BUNA 70 Q RING

QH70216 is an AS568-216 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 1.109 in (28.17 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.387 in (35.23 mm). In service, this quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

This material stands up to propane and butane, water, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in automotive brake fluid or strong acids. The profile itself contributes lower compressive load required to achieve a seal and two sealing bands per contact face rather than one.

Maintenance and OEM teams specify it across agricultural equipment, construction equipment, and automotive.

Order part number QH70216, sold individually. Unit weight is approximately 1.328 g. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.