Industrial Stainless Steel Press Pipe Fittings SS304 SS316L Straight Connector

Each type of TrustPRESS® fitting has different sealing elements, giving them the ability to run the different applications. These sealing elements include:

● EPDM Sealing. Ethylene-propylene-diene monomer rubber (EPDM) is a synthetic, cured all-purpose elastomer known for its excellent resistance to chemicals and other harsh environmental conditions as well as its shiny black color. With operating temperatures that range from 0℉ to 250℉, the EPDM sealing element is suitable to any type of water application (including hot water) as well as compressed air and ketones.

● HNBR Sealing. TrustPRESS® has hydrogenated acrylonitrile butadiene rubber (HNBR)—a unique elastomer that stands up to gases and oils better than EPDM. HNBR is yellow in color and boasts a great deal of strength and retention in the face of heat, oil, and chemical exposure. HNBR sealing elements are primarily geared toward gas applications, from natural and propane to mixed and manufactured gases, along with oils and lubricants. If there’s a fire, HNBR sealing elements won’t melt and cause a leak or explosion.

● FKM Sealing. Fluoroelastomer (FKM) is a specialty-purpose elastomer that is dull black in appearance. In combination with excellent resistance to chemicals and environmental influences, FKM is also characterized by a resistance to extreme spikes in temperatures (up to 356℉) for 24 hours or less. These qualities make the FKM sealing element suitable for industrial environments where there are harsh, corrosive conditions.

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