3MM CS X 99.5MM ID BLACK BUNA 70D

Part number H3X99.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 99.5 mm (3.917 in), a cross section of 3 mm (0.118 in), and an outside diameter of 105.5 mm (4.15 in). An o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is specified for strong abrasion and tear resistance, low compression set under sustained load. Expect good resistance to propane and butane, hydraulic fluids, and greases and lubricants. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or strong acids are present.

Common environments for this compound include automotive, general industrial maintenance, and agricultural equipment.

H3X99.5 ships individually. Unit weight is approximately 2.826 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.