Rotary Shaft Seals
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OSA The OSAtype seal has a metal insert encased in rubber on all but the face away from the fluid to be sealed. It is useful where housing may have a greater coeffecient of expansion than the metal case oil seal. It is Suitable for general sealing applications and housings having considerable amount of corrosion.
OSB TheOSB type rotary shaft seal is also widely used seal and many sizes are available ex-stock. The metal encased on the outer diameter and on the non fluid sealing side ensures a better resistance to thermal expansion when compared to the rubber encased metal insert rotary shaft seal.
OSC The OSC type rotary shaft seal is a closed,spring loaded built up seal with two metal cup inserts. The complete metal encased ensures strength especially for seals with small cross section or even large diameters. Spareage can supply these seals upto 1500 mm. Please refer to the diamension list for availability.
OSA-DL OSA-DL is similar to OSA type rotary shaft seal but with an additional dust lip which is provided to avoid entry of light to medium dust and dirt.
OSB-DL OSB-DL is similar to OSA type rotary shaft seal but with an additional dust lip which is provided to avoid entry of light to medium dust and dirt.

OSC-DL OSC-DL is similar to OSA type rotary shaft seal but with an additional dust lip which is provided to avoid entry of light to medium dust and dirt.
OSA-WS The OSA-WS rotary shaft seal is useful where pressure is in excess of 0.5 bar or for seal with small diameter where spring cannot be loaded.

OSB-WS The OSB-WS rotary shaft seal is similar to the OSA-WS but has an advantage of better housing retention
OSA-DL/DS The OSA-DL/DS rotary shaft seal can be used for sealing two separate fluids. e.g. coolant from shaft side to enter the bearing or to avoid the leakage of bearing lubricant from the opposite side.
OSB-DL/DS The OSB-DL/DS is similar to OSA-DL/DS but has a higher retention in the bearing housings.
OSC-DL/DS The OSC-DL/DS is also similar to OSA-DL/DS but is most suitable for large diameters.