Ordered as H90M3.5X33.7, this is a black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 33.7 mm (1.327 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 40.7 mm (1.6 in). The o-ring remains the most cost-effective sealing element available for pressurized assemblies. Supplementary detail from the product record: Metric O-RING, JIS P34.
Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, low compression set under sustained load. The material holds up against propane and butane, water, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or strong acids will shorten service life.
It sees regular use in fluid power, general industrial maintenance, and construction equipment.
H90M3.5X33.7 ships individually. Unit weight is approximately 1.5817 g. Review your operating media and conditions against this specification before installation.
Description 3.5MM CS X 33.7MM ID BLACK BUNA 90D
Actual Outside Diameter 40.7 mm (1.6 inch)
Actual Cross Section 3.5 mm (0.138 inch)
Actual Inside Diameter 33.7 mm (1.327 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity