Ordered as H3X28.5, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 28.5 mm (1.122 in), a cross section of 3 mm (0.118 in), and an outside diameter of 34.5 mm (1.36 in). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.
As a material, Buna-N (Nitrile) offers reliable performance in both static and dynamic service, strong abrasion and tear resistance. The material holds up against propane and butane, greases and lubricants, and many alcohols. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.
Maintenance and OEM teams specify it across agricultural equipment, construction equipment, and hydraulic and pneumatic systems.
This item is sold individually under part number H3X28.5. Review your operating media and conditions against this specification before installation. 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.
description 3MM CS X 28.5MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 34.5 mm (1.36 inch)
Actual_CS 3 mm (0.118 inch)
Actual_ID 28.5 mm (1.122 inch)
ProductCode Description O-Rings - Metric - Commodity