Ningguo Shunda Sealing Co., Ltd

Materials selection guide

Characteristics /raw materials	Ethylene Propylene Diene Monomer	Nature Rubber (NR)	Styrene- Butadiene Rubber (SBR)	Butanediene Rubber (BR)	Chloroprene Rubber (CR)	Butadiene Rubber (NBR)	Silicon Rubber (SR)	Viton (FKM)	Butyl Rubber
Weather resistance	√	＋	＋	×	○	×	○	√	√
Ozone resistance	√	×	×	×	○	×	√	√	√
Heat resistance	√	×	＋	＋	○	＋	√	√	√
Low temperature resistance	√	○	○	√	○	＋	√	×	○
Acid resistance	√	○	○	○	○	○	√	√	○
Alkali resistance	√	○	○	○	○	○	○	√	○
Resistance to mineral oil	×	×	×	×	○	√	×	√	○
Resistance to vegetable oil	○	○	○	○	○	√	○	√	√
Abrasion resistance	○	○	○	√	○	○	×	○	○
Tear resistance	＋	√	＋	＋	○	＋	×	＋	○
Strength properties	○	○	○	○	○	○	＋	√	○
Compression set	○	√	√	○	○	○	√	×	○
Impact resistance	○	√	○	○	○	×	＋	＋	√
Gas barrier properties	＋	×	＋	×	○	○	＋	○	√
Flame resistance	×	×	×	×	○	＋	＋	○	＋
Electrical properties	√	○	＋	＋	×	×	√	＋	√
Color stability	√	○	○	○	×	○	√	○	○
Tackiness	×	√	＋	＋	○	○	○	＋	×
Processability	○	√	○	×	＋	＋	√	＋	＋

√:EXCELLENT　○:GOOD　＋:FAIR　×:UNACCEPTABLE