Cintropur - FWZCONW250 / Ref 11 referenced O-ring filter bell product produced by high technology. FWZCONW250 / Ref 11 became irreplaceable of foundations. FWZCONW250 / Ref 11 referenced product which is satisfy the customer's needs, offers advantages of quality and cost. It produced result of tests of laborotory for years. FWZCONW250 / Ref 11 referenced product is an original piece of your foundation or machine, original parts makes your machine live longer.