The FS70139 is an AS568-139 blue Fluorosilicone (FVMQ) 70 Shore A O-Ring measuring an inside diameter of 2.175 in (55.25 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.381 in (60.48 mm). This o-ring remains the most cost-effective sealing element available for pressurized assemblies.
It resists aromatic fuels and jet fuel, extreme cold, and petroleum oils. Fluorosilicone (FVMQ) offers good compression set resistance in static duty, excellent ozone and UV stability. Continuous operating temperature is published at -80°F (-62.2°C) to 350°F (176.7°C). It should not be specified for service in ketones or hydrazine.
Maintenance and OEM teams specify it across high-altitude equipment, aerospace and defense, and military ground vehicles.
Order part number FS70139, sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description *568-139 FLUOROSILICONE 70 DURO ORING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 2.175 inch (55.25 mm)
Actual Outside Diameter 2.381 inch (60.48 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Premium