Product category:
Seals
News Release from: Freudenberg Simrit LP | Subject: Simmerring
Edited by the Engineeringtalk Editorial
Team on 18 April 2008
Huge seal designed for propellers
Simrit recently manufactured a 1475 x 1539 x 25mm Simmerring, which will be used to seal the main shaft in Voith Schneider propellers.
Simrit recently manufactured the largest Simmerring in history This radial shaft seal, which measures 1475 x 1539 x 25mm, will be used to seal the main shaft in Voith Schneider propellers
This article was originally published on Engineeringtalk on 18 Feb 2003 at 8.00am (UK)
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Seal performs under pressure
Simrit's special PPS premium pressure seal Simmerring was developed for sealing shafts in aggregates that are characterised by high system pressure.
Seals can be adapted for individual applications
Freudenberg has succeeded in developing a Simmerring for industrial applications which combines the properties of both PTFE and elastomer materials.
Voith Turbo Schneider Propulsion intends to deliver these modern ship propulsion systems, which have an output of between 2500 and 3800kW, to a Spanish shipyard, which in turn plans to install them in so-called "platform supply vessels" and multifunctional offshore ships.
Several of these large radial shaft seals will initially be produced for three of these vessels using the tried-and-tested 87 FKM 91136.
This material is ideal for sealing ship propulsion systems and is capable of meeting the high demands of salt water applications.
The tough demands made by both salt water and oils make additional measures necessary.
The seal's stainless steel parent panels, for example, are treated with a special binder while its stainless steel springs are given an anti-corrosion coating and are covered with a protective elastomer hose.
Simrit has been supplying Voith Turbo with high-quality Simmerring solutions for many years.
Simrit is also Voith Turbo Schneider Propulsion's sole supplier of shaft seals for ship propulsion systems.
Designing and producing the shaft seals for the new Voith Schneider propellers proved a real challenge.
In order to provide the design engineers with helpful information at the earliest possible stage, Simrit supplied Voith with FEM calculations together with the offer.
This helped ensure a safe design for the entire propulsion system.
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