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Type | Mark | Rigidity | Heat resistance | Cold resistance | Oil resistance | Wear resistance |
Natural rubber | NR | 60 | 120centigrade | -50 centigrade | bad | good |
Ding nitrile rubber | NBR | 60 | 130centigrade | -10 centigrade | good | good |
Polyurethane rubber | PU | 60 | 80 centigrade | -30 centigrade | good | good |
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