Q-030 BUNA 70 Q RING

Ordered as QH70030, this is an AS568-030 black Buna-N (Nitrile) 70 Shore A quad profile Quad-Ring supplied with an inside diameter of 1.614 in (41 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.754 in (44.55 mm). The quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

Buna-N (Nitrile) is widely chosen for low compression set under sustained load, strong abrasion and tear resistance. Expect good resistance to greases and lubricants, many alcohols, and petroleum-based oils. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

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

Reference part number QH70030 when ordering; the item is sold individually. Unit weight is approximately 0.4086 g and nominal inside diameter is listed as 1 5/8 inch. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.