-044 BLACK BUNA 90D O-RING

Buna-N O-Ring, 3.739 in ID x 0.07 CS, 90A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
44
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
1/16 inch
Nominal Inside Diameter
3 3/4 inch
Nominal Outside Diameter
3 7/8 inch
Unit of Measure
EA
SKU:
H90044
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Product Specification

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Part number H90044 is an AS568-044 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 3.739 in (94.97 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 3.879 in (98.53 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. The material holds up against petroleum-based oils, many alcohols, and water. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

Common environments for this compound include hydraulic and pneumatic systems, agricultural equipment, and general industrial maintenance.

Order part number H90044, sold individually. Unit weight is approximately 1.0701 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Item
H90044
Description
-044 BLACK BUNA 90D O-RING
Actual Cross Section
0.07 inch (1.78 mm)
Actual Inside Diameter
3.739 inch (94.97 mm)
Actual Outside Diameter
3.879 inch (98.53 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity