This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 29.1 mm (1.146 in), a cross section of 1.6 mm (0.063 in), and an outside diameter of 32.3 mm (1.27 in), catalogued under part number H1.6X29.1. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.
The compound resists petroleum-based oils, propane and butane, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) offers strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ketones or automotive brake fluid are present.
It sees regular use in fluid power, construction equipment, and automotive.
Reference part number H1.6X29.1 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description 1.6MM CS X 29.1MM ID BLACK BUNA 70D
Actual Outside Diameter 32.3 mm (1.27 inch)
Actual Cross Section 1.6 mm (0.063 inch)
Actual Inside Diameter 29.1 mm (1.146 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity