H90M5.7X74.6 is a black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 74.6 mm (2.937 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 86 mm (3.39 in). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. The catalog record notes: Metric O-RING, JIS P75.
The compound resists petroleum-based oils, water, and hydraulic fluids. Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).
Maintenance and OEM teams specify it across agricultural equipment, automotive, and general industrial maintenance.
Order part number H90M5.7X74.6, sold individually. Unit weight is approximately 9.0308 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Description 5.7MM CS X 74.6MM ID BLACK BUNA 90D
Actual Outside Diameter 86 mm (3.39 inch)
Actual Cross Section 5.7 mm (0.224 inch)
Actual Inside Diameter 74.6 mm (2.937 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity