Silquest RC-1 Silane offers improvements in modulus and tensile strength along with stable wet electrical properties are achieved with Silquest RC-1 silane in rubber compounds. This coupling agent does not contain and will not liberate ethylene glycol monomethyl ether or other glycol ethers during its use. It is recommended as an alternate to Silquest A-172 silane which does liberate EGME upon contact with moisture.