Boston Industrial Solutions introduced Citrine® CAL-685, a silicone primer engineered to improve bonding between unvulcanized platinum-based liquid silicone rubber (LSR) and various substrates during overmolding. The adhesion promoter ensures reliable bonding to materials such as organic glass, aluminum, bakelite, nylon (PA), polyimide and epoxy resin. It offers resistance to water, alkali, oils, solvents and environmental stress while remaining compatible with both platinum- and BPO-vulcanized silicone. Designed for use in medical, automotive, aerospace and consumer applications, Citrine CAL-685 supports both primary and secondary vulcanization processes, providing long-term adhesion and durability.

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