568-343 BUNA 70 SQUARE CUT RINGS

Part number SH70343 is an AS568-343 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring built to an inside diameter of 3.725 in (94.62 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.145 in (105.28 mm). A quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

As a material, Buna-N (Nitrile) is valued for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. It resists petroleum-based oils, water, and greases and lubricants. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or polar solvents.

Maintenance and OEM teams specify it across fluid power, agricultural equipment, and construction equipment.

Reference part number SH70343 when ordering; the item is sold individually. Unit weight is approximately 8.657 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.