-343 BROWN FKM 75D O-RING

Viton® O-Ring, 3.725 in ID x 0.21 CS, 75A, Brown, -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
Brown
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:
VB75343
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Product Specification

-
The VB75343 is an AS568-343 brown Viton® (FKM) 75 Shore A O-Ring supplied with 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). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

This material stands up to chlorinated solvents, many acids, and aromatic hydrocarbons. Viton® (FKM) is widely chosen for very low compression set at elevated temperature and long service life in hot, chemically aggressive environments. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Applications involving low-molecular-weight organic acids or amines call for a different compound.

Common environments for this compound include semiconductor equipment, aerospace, and automotive fuel systems.

Reference part number VB75343 when ordering; the item is sold individually. Unit weight is approximately 14.331 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
VB75343
Description
-343 BROWN 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