-380 BLACK BUNA 70D O-RING

Buna-N O-Ring, 11.475 in ID x 0.21 CS, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
380
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
11 1/2 inch
Nominal Outside Diameter
11 7/8 inch
Unit of Measure
EA
SKU:
H70380
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Product Specification

-
H70380 is an AS568-380 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 11.475 in (291.47 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 11.895 in (302.13 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Expect good resistance to water, propane and butane, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is known for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in automotive brake fluid or strong acids.

Typical settings include agricultural equipment, construction equipment, and general industrial maintenance.

Order part number H70380, sold individually. Unit weight is approximately 25.478 g and nominal inside diameter is listed as 11 1/2 inch. Check the compound against your process media, pressure and temperature before committing to a design.
Item
H70380
Description
-380 BLACK BUNA 70D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
11.475 inch (291.47 mm)
Actual Outside Diameter
11.895 inch (302.13 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity