-174 BLACK BUNA 70D O-RING

The H70174 is an AS568-174 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 8.737 in (221.92 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 8.943 in (227.15 mm). This o-ring compresses into its gland to block fluid or gas migration across a joint.

The compound resists water, petroleum-based oils, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

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

Reference part number H70174 when ordering; the item is sold individually. Unit weight is approximately 4.6447 g and nominal inside diameter is listed as 8 3/4 inch. Check the compound against your process media, pressure and temperature before committing to a design. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.