The TUV-certified solution for oval closure lid gaskets.
This gasket, which is based on the classic Novaphit® SSTC material, has become the widely used standard product for oval gaskets that require official approval since TUV testing was introduced in connection with TRD 401.
Novaphit® SSTCTRD 401 satisfies the requirements made in the highest testing category D(250 °C/40 bar) specified in TRD 401 without any difficulty. It can, however, also be used when the application parameters are more demanding than this (see the application recommendation below). Oval gaskets 2,4 or 6 mm thick are produced from the basic material, which is 2 mm thick, by certified manufacturers. This means that all the different applications are covered - from delivery of a new boiler to a steam generator that has already been in operation for a long time.
Thanks to a sufficiently thick graphite layer and the positive properties of the expanded metal insert, Novaphit® SSTCTRD 401 is unusually adaptable to sealing surface unevenness. Optimum advantage is taken of the low bolting forces required in the closure lid area due to the design parameters to shape the graphite.
Novaphit® SSTCTRD 401 also has all the properties of Novaphit® SSTC and can therefore be recommended for any other steam generation application too.