Ordered as H7X187.3, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 187.3 mm (7.374 in), a cross section of 7 mm (0.276 in), and an outside diameter of 201.3 mm (7.93 in). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
As a material, Buna-N (Nitrile) delivers low compression set under sustained load and the most widely specified general-purpose sealing elastomer. The compound resists petroleum-based oils, greases and lubricants, and hydraulic fluids. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or automotive brake fluid.
Typical settings include automotive, construction equipment, and fluid power.
H7X187.3 ships individually. Review your operating media and conditions against this specification before installation.
description 7MM CS X 187.3MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 201.3 mm (7.93 inch)
Actual_CS 7 mm (0.276 inch)
Actual_ID 187.3 mm (7.374 inch)
ProductCode Description O-Rings - Metric - Commodity