8.4MM CS X 169.5MM ID BLACK BUNA 70D

Buna-N O-Ring, 8.4 x 169.5 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
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:
H8.4X169.5
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Product Specification

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Ordered as H8.4X169.5, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 169.5 mm (6.673 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 186.3 mm (7.33 in). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Additional detail on this item: Metric O-RING, JIS P170.

Expect good resistance to propane and butane, water, and many alcohols. Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or polar solvents.

Common environments for this compound include fluid power, hydraulic and pneumatic systems, and agricultural equipment.

Order part number H8.4X169.5, sold individually. Unit weight is approximately 38.491 g. Review your operating media and conditions against this specification before installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Item
H8.4X169.5
Description
8.4MM CS X 169.5MM ID BLACK BUNA 70D
Actual Outside Diameter
186.3 mm (7.33 inch)
Actual Cross Section
8.4 mm (0.331 inch)
Actual Inside Diameter
169.5 mm (6.673 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity