prov:value
| - As the rubber other than EPDM, for example, there can be used butyl rubber (IIR), butadiene rubber (BR), isoprene rubber (IR), styrene-butadiene rubber (SBR), chloroprene rubber (CR), natural rubber (NR), 1,2-polybutadiene, acrylonitrile-butadiene rubber (NBR), ethylene-propylene rubber (EPM), acrylic rubber (ACM), and chlorosulfonated polyethylene (CSM).
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