HYDROCARBON RESISTANT SEALANT COMPOSITION

A composition based upon a blend of lower alkyl or lower alkoxyalkyl polyacrylate ester elastomers with one or more materials selected from liquid butadiene acrylonitrile copolymers and halogenated fire-retardant plasticizers. Blends with the liquid butadiene acrylonitrile copolymers include from about 5 to about 50% by weight of the copolymer and from about 50 to about 95% by weight of the polyacrylarte ester elastomer. Blends with the halogenated fire-retardant plasticizer include from about 5 to about 100 parts by weight of the halogenated fire-retardant plasticizer per 100 part of the polyacrylate ester elastomer. Hydrocarbon-resistant sealant compositions further contain effective amounts of one or more plasticizers in amounts effective to plasticize the blend together with one or more reinforcing materials. Flameresistant sealant compositions utilize phosphate ester plasticizers and further contain one or more flame-retardant materials including alumina trihydrate, magnesium carbonate and magnesium hydroxide hydrate.