5.7MM CS X 32MM ID BLACK BUNA 70D

Ordered as H5.7X32, this is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 32 mm (1.26 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 43.4 mm (1.71 in). The o-ring compresses into its gland to block fluid or gas migration across a joint.

The compound resists petroleum-based oils, water, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs and low compression set under sustained load. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or ketones are present.

Typical settings include fluid power, automotive, and agricultural equipment.

Reference part number H5.7X32 when ordering; the item is sold individually. Unit weight is approximately 3.7213 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.