German standard for annealed copper sealing washers. The washers we produce are what the standard defines as type A, flat washers.
The production process is entirely conducted at our production site, from blanking to packaging, including annealing in a controlled atmosphere.
Technical Information
Copper Cu-ETP according to UNI EN 1652
In case of unavailability of Cu-ETP we reserve the right to use other types of Cu 99.9% copper, equivalent in mechanical properties.
The washers are annealed to increase the holding capacity after tightening.
Hardness after annealing: HV5 < 48 ( HB 1/5 < 45 )
Hardness is validated at the end of annealing for all our production batches using the Vickers test method.
Our product range includes ALL items listed in DIN 7603.
See technical drawings below.
Annealed copper washers: 74152100 00
All the washers we supply are of Italian origin
Below is a list of DIN 7603 washers accompanied by our technical drawing; please note that we have more than 2,000 moulds and can manufacture thousands of different articles. If the sealing washer you are looking for is not present in the DIN7603 table, you can send us your request for an offer by following this link, indicating the diameter, thickness and number of pieces you intend to purchase.
List of aluminium washers usually available in stock and for which we can guarantee a lead time of 2 weeks: