SF-FR series expansion joints are covered with special synthetic material, designed to alleviate piping stress, absorb pipe misalignment, compression and extension, noise and vibration, in a relatively short space and the area is required to prevent fire disaster.
EPDM liner expansion joints in High-Tech design for water, cold and warm waste water, seawater, cooling water, hot air, also with chemical additives for water treatment, low concentrated acids and alkalis, technical alcohols, eaters and ketones.
Temperature (depending on medium) range -30°C up to +100°C, temporarily up to +120°C.
Not suitable for all kinds of mineral oil products, cooling water with added oil containing corrosion preventatives, oily compressor air.
NBR liner expansion joints designed for petroleum based products, DIN EN fuels up to 50% aromatic content, cooling water with oily anticorrosion additives, lubrication and hydraulic oil, seawater. Temperature (depending on medium) range -30°C up to +90°C, temporarily up to +100°C.
The outside cover for SF-FR series rubber expansion joints, is one kind of special synthetic material with high temperature resistant. It reliably protects the expansion joint against radiation heat and direct flames up to + 800° C for 30 minutes (The fire tests have been already carried out in accordance with Standard ISO 15540, ISO 15541, ASTM F 1387).