You have no items in your shopping cart.

-319 BLACK BUNA 70D O-RING

Buna-N O-Ring, 1.037 in ID x 0.21 CS, 70A, Black, Metal Det., -40 to 250°F

Status
Out of Stock
Est. Ship Date
20 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
319
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
1 1/16 inch
Nominal Outside Diameter
1 7/16 inch
Unit of Measure
EA
SKU:
H70MD319

Product Specification

-
This o-ring is supplied in AS568-319 black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 1.037 in (26.34 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.457 in (37.01 mm), catalogued under part number H70MD319. It compresses into its gland to block fluid or gas migration across a joint.

As a material, Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, strong abrasion and tear resistance. Expect good resistance to propane and butane, many alcohols, and greases and lubricants. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where automotive brake fluid or ketones are present.

The compound is metal detectable for HACCP and foreign-body control programs. Common environments for this compound include fluid power, general industrial maintenance, and construction equipment.

This item is sold individually under part number H70MD319. Nominal inside diameter is listed as 1 1/16 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Item
H70MD319
Description
-319 BLACK BUNA 70D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
1.037 inch (26.34 mm)
Actual Outside Diameter
1.457 inch (37.01 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable