-244 BLACK BUNA 90D O-RING

Buna-N O-Ring, 4.234 in ID x 0.139 CS, 90A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
244
Durometer
90 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Nominal Cross Section
1/8 inch
Nominal Inside Diameter
4 1/4 inch
Nominal Outside Diameter
4 1/2 inch
Unit of Measure
EA
SKU:
H90244
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Product Specification

-
Ordered as H90244, this is an AS568-244 black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 4.234 in (107.54 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.512 in (114.6 mm). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against hydraulic fluids, petroleum-based oils, and water. Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. 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 ketones or ozone and direct sunlight.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, general industrial maintenance, and automotive.

This item is sold individually under part number H90244. Unit weight is approximately 4.7958 g. Review your operating media and conditions against this specification before installation.
Item
H90244
Description
-244 BLACK BUNA 90D O-RING
Actual Cross Section
0.139 inch (3.53 mm)
Actual Inside Diameter
4.234 inch (107.54 mm)
Actual Outside Diameter
4.512 inch (114.6 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity