1-800-265-2710 ALL CONTACTS HOME BROCHURES MENU Materials Polycorp Protective Linings are based on several families of compounds. The following are the most common types along with their general characteristics. PROTECTIVE LININGS MATERIALS Soft Natural Rubber Good resistance to most inorganic chemicals with the exception of strong oxidizing agents. They exhibit outstanding abrasion resistance and will expand and contract with thermal variations of the metal substrate. LEARN MORE Hard Natural Rubber (Semi and Ebonite) Better chemical and heat resistance than soft natural rubber. Wide application in organic and inorganic acids and chlorine gas. Specific grades have excellent permeation resistance and heat resistance. LEARN MORE TRIFLEX™ Three ply natural rubber lining (soft-hard-soft) that has excellent chemical and moderate abrasion resistance. The semi-hard rubber center layer provides a permeable barrier and the soft cushion allows maximum adhesion to steel. LEARN MORE Chlorobutyl / Bromobutyl Good resistance to acids and caustic solutions up to 200° F. Recommended for applications that require ozone, sunlight and aging resistance. Unaffected by cold weather or rapid temperature changes. Strongly recommended for super phosphoric acid and sodium hypochlorite. LEARN MORE Chloroprene (Neoprene) A synthetic elastomer with some physical properties similar to natural rubber. Superior to natural rubber in resistance to heat, ozone, sunlight, weather, flame and oil. LEARN MORE Nitrile Good resistance to greases, oils, petroleum hydrocarbons and other non-polar solvents. Good heat aging resistance up to 239°F (115°C). LEARN MORE Styrene-Butadiene Rubber Good abrasion resistance, excellent impact strength, very good resilience and a high tensile strength. The operating temperature of SBR lining is up to 160˚F (71°C). LEARN MORE MOR (Moderate Oil Resistance) Rubber Blended rubber lining for general purpose use for abrasion and moderate oil resistance. LEARN MORE EPDM (Ethylene-Propylene) Rubber Synthetic hydrocarbon-based rubber that is extremely resistant to attack by ozone, oxygen and weather. EPDM resists attack from oxygenated solvents such as acetone, MEK, ethyl acetate, weak acids and alkalis, detergents, alcohols and glycols. LEARN MORE REQUEST FOR CONTACT Looking for more information. Help us help you by filling out our simple online contact form. REQUEST GET THE APP! Polycorp Material Selector and Usage Calculator App. © 2021 Polycorp Ltd. 519-846-2075 Email Other Links Accessibility Community Support