Abstract
Generally today, there are three types of sterntube seals and those are water lubricating type, oil lubricating type and air type which air chamber is provided. And for all of types it is common sense that exchange of sealing ring, Viton or NBR, is necessary regularly. But the material of sealing ring for this“SIMPLAN Shaft Seal”is Silicon Carbide and it realizes the condition that it is no necessary to exchange sealing ring semipermanently and help to reduce maintenance cost of the ship. Furthermore seal body can keep constant pressure against sealing ring and it also helps to improve the performance of the sealing system. It was developed and it is sold by B+V Industrietechnik GmbH in Hamburg, Germany.
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