3.5MM CS X 40.7MM ID BLACK BUNA 70D

Part number H3.5X40.7 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 40.7 mm (1.602 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 47.7 mm (1.88 in). An o-ring remains the most cost-effective sealing element available for pressurized assemblies. The catalog record notes: Metric O-RING, JIS P41.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, economical choice for high-volume maintenance programs. The compound resists petroleum-based oils, propane and butane, and many alcohols. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving polar solvents or strong acids call for a different compound.

Common environments for this compound include automotive, construction equipment, and fluid power.

Reference part number H3.5X40.7 when ordering; the item is sold individually. Unit weight is approximately 1.664 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.