4MM CS X 64MM ID BLACK BUNA 70D

Buna-N O-Ring, 4 x 64 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:
H4X64
Please login to see price and add to cart

Product Specification

-
APG stocks the H4X64, a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 64 mm (2.52 in), a cross section of 4 mm (0.157 in), and an outside diameter of 72 mm (2.83 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and low compression set under sustained load. This material stands up to many alcohols, greases and lubricants, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in automotive brake fluid or ketones.

Typical settings include agricultural equipment, construction equipment, and automotive.

H4X64 ships individually. Unit weight is approximately 3.35 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Item
H4X64
Description
4MM CS X 64MM ID BLACK BUNA 70D
Actual Outside Diameter
72 mm (2.83 inch)
Actual Cross Section
4 mm (0.157 inch)
Actual Inside Diameter
64 mm (2.52 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity