Direct contact
ttv dichtungen

TTV GmbH +49 (0) 7303 - 92874 - 0


For the maximum service life in your application

Usit-Rings are commonly referred to as screw gasket seals or flange connection seals. They consist of a flat, metallic disc and a rubber bulge on the inside or outside. The metallic disc is available in both steel and stainless steel, the rubber seal can be delivered in either NBR or even Viton.

Our range of dimensions offers both metric as well as inch sizes.



Profile Design Material Hardness (Shore A) color Max. pressure in Mpa (bar) Temperature (°C)/ temporarily
Typ 1 NBR 70 black 25 (250) -30 to +100/+120
Typ 1 FKM 70 brown 25 (250) -20 to +200
Typ 2 NBR 70 black 25 (250) -30 to +100/+120
Typ 2 FKM 70 brown 25 (250) -20 to +200
Typ 3 NBR 70 black 25 (250) -30 to +100/+120
Typ 3 FKM 70 brown 25 (250) -20 to +200

Material selection at a glance

Raw material Designation Temperature Range
Nitrile butadiene rubber NBR 70 -30°c   +100°C
Fluoric rubber FPM 70 -20°c   +180°C
Ethylen-Propylen-Dien-Rubber EPDM 70 -40°c   +150°C
Steel AISI 1020
Stainless steel AISI 304 / AISI 316

Download technical information


Whether agricultural machinery, construction machinery, forestry technology, drive technology, mechanical engineering, automotive or aerospace, we are ready for your challenges. With our engineering solutions, we manage to offer added value in all decisive product parameters through solutions developed specifically for customers and applications. Get to know our competence and best examples in the most diverse markets.