NR NBR CR PU rubber roller
>>details
| model | rigidity(JIS-A) | heat resistance | cold resistance | oil resistivity | seasonal resistance | friction resistance | |
| natural rubber | NR | 60 | 120? | -50? | no | good | better |
| nitro rubber | NBR | 60 | 130? | -10? | good | good | better |
| chloroprene rubber | CR | 60 | 130? | -35? | good | better | better |
| polyester rubber | PU | 90 | 80? | -30? | good | good | better |
