You have no items in your shopping cart.

-166 BLACK BUNA 70D O-RING

Buna-N O-Ring, 6.737 in ID x 0.103 CS, 70A, Black, Metal Det., -40 to 250°F

Status
Out of Stock
Est. Ship Date
21 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
166
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
3/32 inch
Nominal Inside Diameter
6 3/4 inch
Nominal Outside Diameter
6 15/16 inch
Unit of Measure
EA
SKU:
H70MD166

Product Specification

-
H70MD166 is an AS568-166 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 6.737 in (171.12 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 6.943 in (176.35 mm). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Buna-N (Nitrile) delivers strong abrasion and tear resistance, reliable performance in both static and dynamic service. This material stands up to greases and lubricants, many alcohols, and water. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

The compound is metal detectable for HACCP and foreign-body control programs. Typical settings include general industrial maintenance, hydraulic and pneumatic systems, and fluid power.

Reference part number H70MD166 when ordering; the item is sold individually. Nominal inside diameter is listed as 6 3/4 inch. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Item
H70MD166
Description
-166 BLACK BUNA 70D O-RING
Actual Cross Section
0.103 inch (2.62 mm)
Actual Inside Diameter
6.737 inch (171.12 mm)
Actual Outside Diameter
6.943 inch (176.35 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable