Part number H90M5.7X119.6 is a black Buna-N (Nitrile) 90 Shore A O-Ring measuring an inside diameter of 119.6 mm (4.709 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 131 mm (5.16 in). An o-ring compresses into its gland to block fluid or gas migration across a joint. Supplementary detail from the product record: Metric O-RING, JIS P120.
As a material, Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. It resists water, many alcohols, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving ketones or polar solvents call for a different compound.
You will find this material specified across agricultural equipment, construction equipment, and general industrial maintenance.
Reference part number H90M5.7X119.6 when ordering; the item is sold individually. Unit weight is approximately 13.78 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Description 5.7MM CS X 119.6MM ID BLACK BUNA 90D
Actual Outside Diameter 131 mm (5.16 inch)
Actual Cross Section 5.7 mm (0.224 inch)
Actual Inside Diameter 119.6 mm (4.709 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity