Ordered as V3.5X24.7, this is a black Viton® (FKM) 75 Shore A O-Ring with an inside diameter of 24.7 mm (0.972 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 31.7 mm (1.25 in). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Supplementary detail from the product record: Metric O-RING, JIS P25.
The compound resists aromatic hydrocarbons, many acids, and chlorinated solvents. Viton® (FKM) delivers excellent resistance to compression set and permeation, the industry benchmark where nitrile reaches its thermal limit. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C).
It sees regular use in aerospace, high-temperature process equipment, and semiconductor equipment.
Reference part number V3.5X24.7 when ordering; the item is sold individually. Unit weight is approximately 1.5867 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Description 3.5MM CS X 24.7MM ID BLACK FKM 75D
Actual Outside Diameter 31.7 mm (1.25 inch)
Actual Cross Section 3.5 mm (0.138 inch)
Actual Inside Diameter 24.7 mm (0.972 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity