Chemitac 21 is a heat reactive adhesive used with the primer Chemitac 11, for bonding elastomers as NR, SBR, BR, CR, NBR, HNBR, IIR, CIIR, BIIR, CSM and EPDM with steel, aluminum, aramid, textile fibers and glass by vulcanization process. In bonding applications for textile fibers with pretreatment RFL (Resorcinol, Formaldehyde, and Latex), Chemitac 21 is applied without primer. The textile fibers can be: Cotton, cellulose, polyamide, polyester, and aramid. Chemitac 21 is also used as only coat adhesive to bonding KTL with elastomers as NR, SBR, BR, CR, NBR, CIIR, BIIR and CSM. Chemitac 21 is a heavy metals free product.