ABRASION RESISTANT & ANTI-POLLUTION SEALS
Wärtsilä Sandguard - OLS3AW-P, OLS4AW-P, OLS3W-P & OLS4W-P
Formerly known as JMT (Japan Marine Technologies) Sandquard 3AS-D, 4AS-D MK2-D & 4BL-D, the Wärtsilä Sandguard oil lubricated outboard stern tube lip type seals are specially designed for dirty water conditions. They consist of the following key components: casing set, high wear resistant seal rings and liner. The seal rings are made of Viton® rubber. The liner provides a running surface for the seal rings and protects the propeller shaft from wear. Although as standard, they are partially split solutions, they are also available as fully split providing the possibility to remove and replace without disturbing any components in the shaft line.
Fresh water is supplied to the seawater chamber to ensure all sea particles/debris is cleared from the dynamic seal ring interfaces, providing protection & longevity of the seal.
OLS3W-P & OLS4W-P, high abrasion resistance, inland waterways & coastal applications
OLS3AW-P & OLS4AW-P, high abrasion resistance & anti-pollution, dredgers & oceangoing applications
Wärtsilä Oceanguard - OFS3H-P
Formerly known as DSS (Deep Sea Seals) Oceanguard, oil lubricated outboard face type seal which offers anti-pollution and abrasion resistance capabilities to cruise, ferry & offshore applications.
The Wärtsilä Oceanguard product range uses a unique design with a face type seal in the sea water and lip seals to operate in the stem tube oil.
The standard seal, OFS3H-P, contains a void space between the water and oil interfaces to provide a separation that enables monitor and draining. This prevents any contamination of the oil system with sea water and vice versa.