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7MM CS X 325MM ID BLACK BUNA 70D

Buna-N O-Ring, 7 x 325 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
22 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
null
Durometer
70 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Nominal Cross Section
null
Nominal Inside Diameter
null
Nominal Outside Diameter
null
Unit of Measure
EA
SKU:
H7X325
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Product Specification

-
This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 325 mm (12.795 in), a cross section of 7 mm (0.276 in), and an outside diameter of 339 mm (13.35 in), catalogued under part number H7X325. It creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against many alcohols, hydraulic fluids, and petroleum-based oils. Buna-N (Nitrile) is valued for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

Common environments for this compound include general industrial maintenance, agricultural equipment, and construction equipment.

Stocked as H7X325 and sold individually. Unit weight is approximately 49.77 g. Check the compound against your process media, pressure and temperature before committing to a design. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Item
H7X325
Description
7MM CS X 325MM ID BLACK BUNA 70D
Actual Outside Diameter
339 mm (13.35 inch)
Actual Cross Section
7 mm (0.276 inch)
Actual Inside Diameter
325 mm (12.795 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity