-343 BLACK FKM 90D O-RING

Viton® O-Ring, 3.725 in ID x 0.21 CS, 90A, Black, -15 to 400°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Fluoroelastomer (FKM/Viton)
Dash Size
343
Durometer
90 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-15°F (-26°C)
Maximum Temperature
400°F (204°C)
Nominal Cross Section
3/16 inch
Nominal Inside Diameter
3 3/4 inch
Nominal Outside Diameter
4 1/8 inch
Unit of Measure
EA
SKU:
V90343
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Product Specification

-
Part number V90343 is an AS568-343 black Viton® (FKM) 90 Shore A O-Ring built to an inside diameter of 3.725 in (94.62 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.145 in (105.28 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Viton® (FKM) delivers excellent resistance to compression set and permeation, very low compression set at elevated temperature. The material holds up against chlorinated solvents, petroleum oils and fuels, and engine and transmission fluids. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Verify compatibility before use with low-molecular-weight organic acids or hot water and steam.

Common environments for this compound include oil and gas, high-temperature process equipment, and aerospace.

Reference part number V90343 when ordering; the item is sold individually. Unit weight is approximately 12.891 g and nominal inside diameter is listed as 3 3/4 inch. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Item
V90343
Description
-343 BLACK FKM 90D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
3.725 inch (94.62 mm)
Actual Outside Diameter
4.145 inch (105.28 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity