Berner - P/N: 1279 referenced sealing ring product produced by high technology. P/N: 1279 became irreplaceable of foundations. P/N: 1279 referenced product which is satisfy the customer's needs, offers advantages of quality and cost. It produced result of tests of laborotory for years. P/N: 1279 referenced product is an original piece of your foundation or machine, original parts makes your machine live longer.