Description: Period of time from the commissioning of a plant, part of a plant, a component or a line system; Name: service life
Description: passed time period after comissioning of a system, sub-system, component or piping; Name: Operating time 
Description: additional information for the product name of the sealing to be able to distinguish - for a product family or for special design (variants) - the products from each other; Name: Type description of the sealing