3MM CS X 315MM ID BLACK BUNA 70D

Buna-N O-Ring, 3 x 315 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:
H3X315
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Product Specification

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Ordered as H3X315, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 315 mm (12.402 in), a cross section of 3 mm (0.118 in), and an outside diameter of 321 mm (12.64 in). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

As a material, Buna-N (Nitrile) offers reliable performance in both static and dynamic service, low compression set under sustained load. This material stands up to propane and butane, petroleum-based oils, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in automotive brake fluid or strong acids.

Common environments for this compound include agricultural equipment, automotive, and hydraulic and pneumatic systems.

Reference part number H3X315 when ordering; the item is sold individually. Unit weight is approximately 9.048 g. Review your operating media and conditions against this specification before installation.
Item
H3X315
Description
3MM CS X 315MM ID BLACK BUNA 70D
Actual Outside Diameter
321 mm (12.64 inch)
Actual Cross Section
3 mm (0.118 inch)
Actual Inside Diameter
315 mm (12.402 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity