... % brand-new rubber, 100% Polyurethane NameConcrete Pump Rubber GasketSizeDN50 (2inch) DN80 (3 inchDN100( ... Natural rubberApplicationUsed in concrete pump truck,concrete pump and pipeline connection seal in construction work equipmentService ... brandsSchwing, PM, Cifa, Kyokuto, Zoomlion, Sany and so on DN125 Concrete Pump Rubber Seal ...