-354 BLACK BUNA 90D O-RING

Buna-N O-Ring, 5.1 in ID x 0.21 CS, 90A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
354
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
3/16 inch
Nominal Inside Diameter
5 1/8 inch
Nominal Outside Diameter
5 1/2 inch
Unit of Measure
EA
SKU:
H90354
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Product Specification

-
APG stocks the H90354, an AS568-354 black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 5.1 in (129.54 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.52 in (140.21 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

This material stands up to hydraulic fluids, many alcohols, and water. Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or polar solvents are present.

Common environments for this compound include agricultural equipment, general industrial maintenance, and fluid power.

Stocked as H90354 and sold individually. Unit weight is approximately 13.077 g and nominal inside diameter is listed as 5 1/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Item
H90354
Description
-354 BLACK BUNA 90D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
5.1 inch (129.54 mm)
Actual Outside Diameter
5.52 inch (140.21 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity