4002-366Y MINNESOTA RUBBER QUAD RING

Part number HQ4002 is an AS568-002 black Buna-N (Nitrile) 70 Shore A quad profile Quad-Ring with an inside diameter of 0.042 in (1.07 mm), a cross section of 0.05 in (1.27 mm), and an outside diameter of 0.142 in (3.61 mm). A quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

Expect good resistance to propane and butane, greases and lubricants, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is known for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to ozone and direct sunlight or strong acids will shorten service life.

Common environments for this compound include general industrial maintenance, construction equipment, and fluid power.

HQ4002 ships individually. Nominal inside diameter is listed as 3/64 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.