*568-390 FLUOROSILICONE 70 DURO ORINGS

Fluorosilicone O-Ring, 20.953 in ID x 0.21 CS, 70A, Blue, -80 to 350°F

Status
Out of Stock
Est. Ship Date
29 Oct 2026
Material
Fluorosilicone
Dash Size
390
Durometer
70 Shore A
Cross Section Type
Round
Color
Blue
Minimum Temperature
-80°F (-62.2°C)
Maximum Temperature
350°F (177°C)
Nominal Cross Section
3/16 inch
Nominal Inside Diameter
21 inch
Nominal Outside Diameter
21 3/8 inch
Unit of Measure
EA
SKU:
FS70390

Product Specification

-
This o-ring is supplied in AS568-390 blue Fluorosilicone (FVMQ) 70 Shore A supplied with an inside diameter of 20.953 in (532.21 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 21.373 in (542.87 mm), catalogued under part number FS70390. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, Fluorosilicone (FVMQ) offers the standard choice for static aerospace fuel system seals, excellent ozone and UV stability. The material holds up against aromatic fuels and jet fuel, ozone and weathering, and extreme cold. Continuous operating temperature is published at -80°F (-62.2°C) to 350°F (176.7°C). Applications involving high-temperature dynamic service or ketones call for a different compound.

Common environments for this compound include aerospace and defense, military ground vehicles, and high-altitude equipment.

FS70390 ships individually. Unit weight is approximately 58.624 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
FS70390
Description
*568-390 FLUOROSILICONE 70 DURO ORINGS
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
20.953 inch (532.21 mm)
Actual Outside Diameter
21.373 inch (542.87 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6006
Product Category
O-Rings - Bulk - Premium