3.5MM CS X 125MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.5 x 125 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:
H3.5X125
Please login to see price and add to cart

Product Specification

-
This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 125 mm (4.921 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 132 mm (5.2 in), catalogued under part number H3.5X125. It creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) is specified for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. It resists water, propane and butane, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or automotive brake fluid.

Common environments for this compound include general industrial maintenance, construction equipment, and hydraulic and pneumatic systems.

H3.5X125 ships individually. Unit weight is approximately 4.747 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. 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
H3.5X125
Description
3.5MM CS X 125MM ID BLACK BUNA 70D
Actual Outside Diameter
132 mm (5.2 inch)
Actual Cross Section
3.5 mm (0.138 inch)
Actual Inside Diameter
125 mm (4.921 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity