3.5MM CS X 47MM ID BLACK BUNA 70D

Ordered as H3.5X47, this is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 47 mm (1.85 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 54 mm (2.13 in). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The compound resists propane and butane, water, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in ozone and direct sunlight or automotive brake fluid.

Maintenance and OEM teams specify it across general industrial maintenance, automotive, and agricultural equipment.

Reference part number H3.5X47 when ordering; the item is sold individually. Unit weight is approximately 1.864 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.