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What is litharge curing?

April 26, 2017curing

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What is litharge curing?

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Litharge, or lead oxide, was a cure system used to increase the acid resistance of fluorocarbon elastomers. In the 1980’s, Parker eliminated lead oxide as a compounding ingredient due to the environmental hazards involved. Today, B-type fluorocarbons like Parker’s V0834-70 are recommended for acid applications, and in fact provide better long-term resistance than older litharge-cured compounds.