Part number H1.8X4.87 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 4.87 mm (0.192 in), a cross section of 1.8 mm (0.071 in), and an outside diameter of 8.47 mm (0.33 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.
As a material, Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, low compression set under sustained load. The compound resists propane and butane, petroleum-based oils, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving polar solvents or ozone and direct sunlight call for a different compound.
Common environments for this compound include general industrial maintenance, hydraulic and pneumatic systems, and fluid power.
Order part number H1.8X4.87, sold individually. Unit weight is approximately 0.0647 g. Review your operating media and conditions against this specification before installation.
description 1.8MM CS X 4.87MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 8.47 mm (0.33 inch)
Actual_CS 1.8 mm (0.071 inch)
Actual_ID 4.87 mm (0.192 inch)
ProductCode Description O-Rings - Metric - Commodity