568-348 BUNA 70 SQUARE CUT RINGS

Part number SH70348 is an AS568-348 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring supplied with an inside diameter of 4.35 in (110.49 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.77 in (121.16 mm). A quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

The material holds up against petroleum-based oils, propane and butane, and many alcohols. Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, low compression set under sustained load. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Verify compatibility before use with strong acids or ozone and direct sunlight.

It sees regular use in construction equipment, hydraulic and pneumatic systems, and automotive.

Order part number SH70348, sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.