-341 BLACK BUNA 70D O-RING

Buna-N O-Ring, 3.475 in ID x 0.21 CS, 70A, Black, Metal Det., -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
341
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
3/16 inch
Nominal Inside Diameter
3 1/2 inch
Nominal Outside Diameter
3 7/8 inch
Unit of Measure
EA
SKU:
H70MD341
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Product Specification

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APG stocks the H70MD341, an AS568-341 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 3.475 in (88.27 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.895 in (98.93 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Expect good resistance to greases and lubricants, propane and butane, and hydraulic fluids. Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, strong abrasion and tear resistance. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where automotive brake fluid or polar solvents are present.

The compound is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across hydraulic and pneumatic systems, agricultural equipment, and general industrial maintenance.

Reference part number H70MD341 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Item
H70MD341
Description
-341 BLACK BUNA 70D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
3.475 inch (88.27 mm)
Actual Outside Diameter
3.895 inch (98.93 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable