Q-149 BUNA 70 Q RING

The QH70149 is an AS568-149 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 2.8 in (71.12 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 3.006 in (76.35 mm). This quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Buna-N (Nitrile) is known for low compression set under sustained load, reliable performance in both static and dynamic service. This material stands up to hydraulic fluids, petroleum-based oils, and greases and lubricants. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes lower compressive load required to achieve a seal and resistance to the spiral twisting that defeats round-section rings.

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

QH70149 ships individually. Unit weight is approximately 1.4505 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.