4MM CS X 30MM ID BLACK BUNA 90D

The H90M4X30 is a black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 30 mm (1.181 in), a cross section of 4 mm (0.157 in), and an outside diameter of 38 mm (1.5 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against petroleum-based oils, hydraulic fluids, and many alcohols. Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to ozone and direct sunlight or automotive brake fluid will shorten service life.

Typical settings include general industrial maintenance, automotive, and agricultural equipment.

Reference part number H90M4X30 when ordering; the item is sold individually. Unit weight is approximately 1.733 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.