SFDA2X55 is a red Silicone 70 Shore A O-Ring built to an inside diameter of 55 mm (2.165 in), a cross section of 2 mm (0.079 in), and an outside diameter of 59 mm (2.32 in). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Supplementary detail from the product record: FDA Compliant TO 21CFR Sec 177-2600, Metric O-RING.
Silicone is specified here for physiological inertness and low toxicity, excellent electrical insulating properties. The compound resists many oxidizing chemicals, extreme heat and cold, and dry heat. Service temperature is rated from -80°F (-62.2°C) through 450°F (232.2°C). Exposure to concentrated acids or abrasive dynamic service will shorten service life.
This item meets FDA requirements for food contact under 21 CFR 177.2600. Typical settings include ovens and heated equipment, electronics and electrical enclosures, and medical devices.
Stocked as SFDA2X55 and sold individually. Unit weight is approximately 0.0064 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Description 2MM CS X 55MM ID RED SILICONE 70D
Actual Outside Diameter 59 mm (2.32 inch)
Actual Cross Section 2 mm (0.079 inch)
Actual Inside Diameter 55 mm (2.165 inch)
Measurement System Metric
Product Category O-Rings - FDA / Metal Detectable