1.78MM CS X 79MM ID BLACK BUNA 70D

Buna-N O-Ring, 1.78 x 79 mm, 70A, Black, -40 to 250°F

Status
Out of Stock
Est. Ship Date
29 Mar 2027
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:
H1.78X79
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Product Specification

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APG stocks the H1.78X79, a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 79 mm (3.11 in), a cross section of 1.78 mm (0.07 in), and an outside diameter of 82.56 mm (3.25 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. This material stands up to greases and lubricants, hydraulic fluids, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or ketones are present.

You will find this material specified across hydraulic and pneumatic systems, agricultural equipment, and fluid power.

H1.78X79 ships individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H1.78X79
Description
1.78MM CS X 79MM ID BLACK BUNA 70D
Actual Outside Diameter
82.56 mm (3.25 inch)
Actual Cross Section
1.78 mm (0.07 inch)
Actual Inside Diameter
79 mm (3.11 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity