WEB EXCLUSIVE: Now there’s something besides liquid silicone rubber for liquid injection molding, or LIM. Lanxess Corp.’s Techical Rubber Products (TRP) business unit recently came out with ultra-low-viscosity (ULV) Therban AT 3400 VP elastomer, said to be the first commercial hydrogenated nitrile rubber (HNBR) suitable for LIM. The product is being aimed at automotive in-place gaskets and seals with a hardness under 40 Shore A. HNBR has excellent resistance to automotive fuels, oils, ozone, and abrasion. It has a viscosity range of 100 to 1000 Pa-s (100,000 to 1 million cp) without plasticizers.
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