ASTM D1049橡胶绝缘封盖物
日期:2012-02-08 16:09
l apply also to any new or modified styles of covers that may be developed for specific purposes. The covers shall be of three types: Type I non-resistant to ozone, made from a high-grade cis-1,4-polyisoprene rubber compound of natural or synthetic origin, properly vulcanized; Type II - ozone resistant, made of any elastomer or combination of elastomeric compounds; and Type III - ozone-resistant, made of any combination of elastomer and thermoplastic polymer, elastic in nature. Electrical proof
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11/01 23:33