7MM CS X 25MM ID BLACK BUNA 70D

Buna-N O-Ring, 7 x 25 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
1 Nov 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:
H7X25
Please login to see price and add to cart

Product Specification

-
The H7X25 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 25 mm (0.984 in), a cross section of 7 mm (0.276 in), and an outside diameter of 39 mm (1.54 in). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, Buna-N (Nitrile) is known for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. It resists greases and lubricants, hydraulic fluids, and propane and butane. 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.

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

Order part number H7X25, sold individually. Unit weight is approximately 4.725 g. Check the compound against your process media, pressure and temperature before committing to a design.
Item
H7X25
Description
7MM CS X 25MM ID BLACK BUNA 70D
Actual Outside Diameter
39 mm (1.54 inch)
Actual Cross Section
7 mm (0.276 inch)
Actual Inside Diameter
25 mm (0.984 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity