| 摘要 |
1. A sealing material on a plastics base, characterised in that it consists of : - 40 to 60 parts by weight of afterchlorinated polyethylene (PCE) with a chlorine content of from 30 to 42%, preferably 36%, - 20 to 30 parts by weight of acrylonitrile/butadiene rubber NBR in a ratio of butadiene : acrylonitrile of from 55 : 45 to 82 : 18, preferably of 67 : 33, - 20 to 30 parts by weight of polyvinyl chloride with a k-value of 58 to 78, preferably of 70, with a plasticizer sorption capacity of at least 30% (in accordance with DIN 53 417, part 1), and - possibly the usual PVC stabilizers, fillers, pigments and blowing agents. |
