5.7MM CS X 114.2MM ID BLACK BUNA 90D

Buna-N O-Ring, 5.7 x 114.2 mm, 90A, Black, -40 to 250°F

Status
In Production
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Durometer
90 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Unit of Measure
EA
SKU:
H90M5.7X114.2
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Product Specification

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H90M5.7X114.2 is a black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 114.2 mm (4.496 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 125.6 mm (4.94 in). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. The compound resists many alcohols, water, and petroleum-based oils. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or automotive brake fluid are present.

Typical settings include hydraulic and pneumatic systems, construction equipment, and general industrial maintenance.

Stocked as H90M5.7X114.2 and sold individually. Check the compound against your process media, pressure and temperature before committing to a design.
Item
H90M5.7X114.2
Description
5.7MM CS X 114.2MM ID BLACK BUNA 90D
Actual Outside Diameter
125.6 mm (4.94 inch)
Actual Cross Section
5.7 mm (0.224 inch)
Actual Inside Diameter
114.2 mm (4.496 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity