1MM CS X 55MM ID BLACK BUNA 70D

Buna-N O-Ring, 1 x 55 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:
H1X55
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Product Specification

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Part number H1X55 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 55 mm (2.165 in), a cross section of 1 mm (0.039 in), and an outside diameter of 57 mm (2.24 in). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs and low compression set under sustained load. This material stands up to petroleum-based oils, many alcohols, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or strong acids will shorten service life.

You will find this material specified across automotive, general industrial maintenance, and fluid power.

Order part number H1X55, sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
H1X55
Description
1MM CS X 55MM ID BLACK BUNA 70D
Actual Outside Diameter
57 mm (2.24 inch)
Actual Cross Section
1 mm (0.039 inch)
Actual Inside Diameter
55 mm (2.165 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity