Part number FS70235 is an AS568-235 blue Fluorosilicone (FVMQ) 70 Shore A O-Ring built to an inside diameter of 3.109 in (78.97 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.387 in (86.03 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
As a material, Fluorosilicone (FVMQ) is specified for a very wide service temperature range and the standard choice for static aerospace fuel system seals. It resists ozone and weathering, chlorinated solvents, and extreme cold. Published continuous service range is -80°F (-62.2°C) to 350°F (176.7°C). It is not the right choice where brake fluids or ketones are present.
It sees regular use in aviation fuel systems, aerospace and defense, and military ground vehicles.
Order part number FS70235, sold individually. Nominal inside diameter is listed as 3 1/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Description *568-235 FLUOROSILICONE 70 DURO ORING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 3.109 inch (78.97 mm)
Actual Outside Diameter 3.387 inch (86.03 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Premium