-125 BLACK BUNA 90D O-RING

The H90125 is an AS568-125 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 1.299 in (32.99 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.505 in (38.23 mm). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The compound resists greases and lubricants, petroleum-based oils, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) offers strong abrasion and tear resistance, low compression set under sustained load. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ketones.

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

Reference part number H90125 when ordering; the item is sold individually. Unit weight is approximately 0.8151 g and nominal inside diameter is listed as 1 5/16 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.