6MM CS X 40MM ID BLACK BUNA 70D

Buna-N O-Ring, 6 x 40 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:
H6X40
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Product Specification

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H6X40 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 40 mm (1.575 in), a cross section of 6 mm (0.236 in), and an outside diameter of 52 mm (2.05 in). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Expect good resistance to hydraulic fluids, petroleum-based oils, and water. Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving automotive brake fluid or ozone and direct sunlight call for a different compound.

Maintenance and OEM teams specify it across fluid power, automotive, and hydraulic and pneumatic systems.

Order part number H6X40, sold individually. Unit weight is approximately 5.077 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H6X40
Description
6MM CS X 40MM ID BLACK BUNA 70D
Actual Outside Diameter
52 mm (2.05 inch)
Actual Cross Section
6 mm (0.236 inch)
Actual Inside Diameter
40 mm (1.575 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity