3.55MM CS X 190MM ID BLACK BUNA 70D

Part number H3.55X190 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 190 mm (7.48 in), a cross section of 3.55 mm (0.14 in), and an outside diameter of 197.1 mm (7.76 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, low compression set under sustained load. It resists propane and butane, petroleum-based oils, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or strong acids.

Maintenance and OEM teams specify it across general industrial maintenance, agricultural equipment, and construction equipment.

This item is sold individually under part number H3.55X190. Unit weight is approximately 7.5175 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.