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7MM CS X 230MM ID BLACK BUNA 70D

Buna-N O-Ring, 7 x 230 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
24 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:
H7X230
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Product Specification

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This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 230 mm (9.055 in), a cross section of 7 mm (0.276 in), and an outside diameter of 244 mm (9.61 in), catalogued under part number H7X230. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

It resists greases and lubricants, petroleum-based oils, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

Typical settings include hydraulic and pneumatic systems, construction equipment, and agricultural equipment.

Stocked as H7X230 and sold individually. Unit weight is approximately 35.065 g. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Item
H7X230
Description
7MM CS X 230MM ID BLACK BUNA 70D
Actual Outside Diameter
244 mm (9.61 inch)
Actual Cross Section
7 mm (0.276 inch)
Actual Inside Diameter
230 mm (9.055 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity