3.5MM CS X 39.7MM ID BLACK BUNA 70D

Part number H3.5X39.7 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 39.7 mm (1.563 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 46.7 mm (1.84 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. Supplementary detail from the product record: Metric O-RING, JIS P40.

Buna-N (Nitrile) is valued for strong abrasion and tear resistance, reliable performance in both static and dynamic service. The compound resists hydraulic fluids, many alcohols, and petroleum-based oils. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to polar solvents or ozone and direct sunlight will shorten service life.

Typical settings include agricultural equipment, fluid power, and construction equipment.

Order part number H3.5X39.7, sold individually. Unit weight is approximately 1.6083 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.