5.7MM CS X 284.2MM ID BLACK BUNA 70D

Buna-N O-Ring, 5.7 x 284.2 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Durometer
70 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:
H5.7X284.2
Please login to see price and add to cart

Product Specification

-
H5.7X284.2 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 284.2 mm (11.189 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 295.6 mm (11.64 in). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint.

The compound resists water, many alcohols, and hydraulic fluids. Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with polar solvents or ozone and direct sunlight.

It sees regular use in construction equipment, general industrial maintenance, and agricultural equipment.

This item is sold individually under part number H5.7X284.2. Unit weight is approximately 28.595 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
H5.7X284.2
Description
5.7MM CS X 284.2MM ID BLACK BUNA 70D
Actual Outside Diameter
295.6 mm (11.64 inch)
Actual Cross Section
5.7 mm (0.224 inch)
Actual Inside Diameter
284.2 mm (11.189 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity