APG stocks the QH70394, an AS568-394 black Buna-N (Nitrile) 70 Shore A quad profile Quad-Ring supplied with an inside diameter of 24.94 in (633.48 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 25.36 in (644.14 mm). A quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.
As a material, Buna-N (Nitrile) offers strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. The material holds up against greases and lubricants, hydraulic fluids, and water. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or polar solvents.
It sees regular use in hydraulic and pneumatic systems, agricultural equipment, and automotive.
QH70394 ships individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.
description Q-394 BUNA 70 Q RING
Actual_CS 0.21 inch (5.33 mm)
Actual_ID 24.94 inch (633.48 mm)
Actual_OD 25.36 inch (644.14 mm)
ProductCode Description O-Rings - Square/Quad - Commodity