-343 BLACK FKM 75D O-RING

Viton® O-Ring, 3.725 in ID x 0.21 CS, 75A, Black, -15 to 400°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Fluoroelastomer (FKM/Viton)
Dash Size
343
Durometer
75 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:
V70343
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Product Specification

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V70343 is an AS568-343 black Viton® (FKM) 75 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). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Viton® (FKM) is known for outstanding high-temperature capability and long service life in hot, chemically aggressive environments. The compound resists aromatic hydrocarbons, many acids, and chlorinated solvents. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). Exposure to hot water and steam or ketones and esters will shorten service life.

Typical settings include aerospace, semiconductor equipment, and high-temperature process equipment.

V70343 ships individually. Unit weight is approximately 12.859 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
V70343
Description
-343 BLACK FKM 75D 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