Tuesday 23rd June 2015 Reserved AreaContactsNews Home The group History Products Materials Production Quality Stock Home Materials Compounds The company, thanks to its know-how acquired over the years, is consulted to study the most suitable gasket for the required use, then formulate the relative compound, have the mold made and then proceed with its production. The raw materials used are purchased from certified companies, which are not considered as simple suppliers, but as important partners to rely on. Since the raw material is one of the essential elements for the success of a perfect seal, Tecnogomma International has always given great importance to it by investing heavily in approved materials. In fact, in order to satisfy the customer as completely as possible, Tecnogomma uses all the main elastomers in its production. Here you will find a list of the main materials used for the realization of our articles and the related compounds approved by us. By selecting them you can read a brief description of the main ones. DWGW Certificates Production Process The DVGW-VP406 worksheet was issued by DVGW and accompanies the EN 549 or EN 682 certifications for use in contact with gas in Germany. The worksheet is divided into 2 parts: The first, which has already become mandatory in addition to the EN 549 and EN 682 certifications, provides for an identification test of the elastomeric material (through the IR technique), and is carried out on our materials following the renewal of expiring certifications (you can therefore find the indication of the conformity of the tests only on new certificates issued by DVGW). The second is still optional today, and includes the following tests: Resistance to ozone, Relaxation of the compression force, Compression set test in the conditions of 3000h at 70 ° C, with detection of the compression set value every 1000h. This test has the clear intention of evaluating the behavior of the material over a rather significant period of time. Compounds HNBR EPDM VMQ FVMQ FKM CR ACM IIR NBR Contact us Contact us through the form or send us an email to: info.t@tecnogomma.com