A hard compound of india-rubber and sulphur, united by the action of heat. Another name for it is vulcanite, n. Also attributive.

Any of several friable rubber-like substances made by vulcanizing unsaturated vegetable oils and used chiefly as compounding ingredients with rubber…

an early synthetic rubber made by polymerization of dimethylbutadiene.

A colourless liquid, made from acetylene and hydrochloric acid, which polymerizes to form neoprene, n.

any of the polymers of chloroprene; (also) any of a class of synthetic rubbers (esp. neoprene) consisting of or made from such polymers.

a polymer of isobutylene; (also) any of a large class of synthetic rubbers consisting of or made from such polymers.

any of the polymers of 1,3-butadiene or its derivatives; (also) any of a class of synthetic rubbers consisting of or made from such polymers.

Any of the polymers of isoprene, which include the major constituent of natural rubber and also some synthetic rubbers very similar to the natural…

Any of various synthetic rubbers which are polymers of chloroprene and are typically strong and resistant to oil, heat, oxidation, and weathering…

Any polymer which contains both ester and amide linkages, esp. any of various rubbery materials of this type which are usually made by mixed…

any polymer of a conjugated diene; esp. one forming a synthetic rubber.

A proprietary name for silicone rubber. Frequently attributive.