-241 BLACK BUNA 70D O-RING

Buna-N O-Ring, 3.859 in ID x 0.139 CS, 70A, Black, Metal Det., -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
241
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
1/8 inch
Nominal Inside Diameter
3 7/8 inch
Nominal Outside Diameter
4 1/8 inch
Unit of Measure
EA
SKU:
H70MD241
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Product Specification

-
Part number H70MD241 is an AS568-241 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 3.859 in (98.02 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.137 in (105.08 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

As a material, Buna-N (Nitrile) is specified for low compression set under sustained load, strong abrasion and tear resistance. The material holds up against many alcohols, water, and propane and butane. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

This o-ring is metal detectable for HACCP and foreign-body control programs. It sees regular use in general industrial maintenance, automotive, and agricultural equipment.

This item is sold individually under part number H70MD241. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
H70MD241
Description
-241 BLACK BUNA 70D O-RING
Actual Cross Section
0.139 inch (3.53 mm)
Actual Inside Diameter
3.859 inch (98.02 mm)
Actual Outside Diameter
4.137 inch (105.08 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable