4.5MM CS X 18MM ID BLACK BUNA 70D

The H4.5X18 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 18 mm (0.709 in), a cross section of 4.5 mm (0.177 in), and an outside diameter of 27 mm (1.06 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Buna-N (Nitrile) is known for low compression set under sustained load and an economical choice for high-volume maintenance programs. The compound resists petroleum-based oils, propane and butane, and greases and lubricants. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).

You will find this material specified across agricultural equipment, automotive, and construction equipment.

H4.5X18 ships individually. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.