Examples include hydrocarbons such as pentane and hexane; hydrocarbon halides such as methylene chloride, trichloroforo-methane, and dichlorodifuruoromethane; and inactive gases such as nitrogen or argon.As examples of elastomers, included are natural rubber, polybutadiene, polyisoprene, styrene-butadiene copolymer (SBR), styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene bl