3.55MM CS X 53MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.55 x 53 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:
H3.55X53
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Product Specification

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H3.55X53 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 53 mm (2.087 in), a cross section of 3.55 mm (0.14 in), and an outside diameter of 60.1 mm (2.37 in). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and economical choice for high-volume maintenance programs. It resists water, greases and lubricants, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where automotive brake fluid or ketones are present.

You will find this material specified across general industrial maintenance, hydraulic and pneumatic systems, and fluid power.

Stocked as H3.55X53 and sold individually. Unit weight is approximately 2.1205 g. Review your operating media and conditions against this specification before installation.
Item
H3.55X53
Description
3.55MM CS X 53MM ID BLACK BUNA 70D
Actual Outside Diameter
60.1 mm (2.37 inch)
Actual Cross Section
3.55 mm (0.14 inch)
Actual Inside Diameter
53 mm (2.087 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity