3MM CS X 49MM ID BLACK BUNA 70D

Ordered as H3X49, this is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 49 mm (1.929 in), a cross section of 3 mm (0.118 in), and an outside diameter of 55 mm (2.17 in). The o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is specified here for low compression set under sustained load and economical choice for high-volume maintenance programs. It resists many alcohols, hydraulic fluids, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where polar solvents or automotive brake fluid are present.

Maintenance and OEM teams specify it across general industrial maintenance, construction equipment, and hydraulic and pneumatic systems.

Order part number H3X49, sold individually. Unit weight is approximately 1.44 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.