2.5MM CS X 105MM ID BLACK BUNA 70D

The H2.5X105 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 105 mm (4.134 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 110 mm (4.33 in). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

It resists petroleum-based oils, water, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving ozone and direct sunlight or strong acids call for a different compound.

Maintenance and OEM teams specify it across construction equipment, automotive, and hydraulic and pneumatic systems.

Reference part number H2.5X105 when ordering; the item is sold individually. Unit weight is approximately 2.025 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.