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-350 BLACK BUNA 70D O-RING

Buna-N O-Ring, 4.6 in ID x 0.21 CS, 70A, Black, Metal Det., -40 to 250°F

Status
Available
Est. Ship Date
23 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
350
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
4 5/8 inch
Nominal Outside Diameter
5 inch
Unit of Measure
EA
SKU:
H70MD350
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Product Specification

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Part number H70MD350 is an AS568-350 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 4.6 in (116.84 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.02 in (127.51 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is specified here for low compression set under sustained load, strong abrasion and tear resistance. This material stands up to hydraulic fluids, water, and many alcohols. 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 strong acids or automotive brake fluid.

This item is metal detectable for HACCP and foreign-body control programs. Typical settings include hydraulic and pneumatic systems, agricultural equipment, and automotive.

Reference part number H70MD350 when ordering; the item is sold individually. Review your operating media and conditions against this specification before installation.
Item
H70MD350
Description
-350 BLACK BUNA 70D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
4.6 inch (116.84 mm)
Actual Outside Diameter
5.02 inch (127.51 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
Yes
NSF Certified
No
Product Code
6012
Product Category
O-Rings - FDA / Metal Detectable