Check the listing for details. Mechanical seal kit 750.0414 for Sequence Sequel King Fish pump model 750. Condition: New. Listed at 33.04 USD. Leaking water pump? Usually if the pump begins to leak the majority of the time it will be a failed mechanical seal, this device has a sacrificial carbon face which fits into the pump housing and works by trapping a thin layer of product liquid between the two polished faces, when the shaft/impeller rotate it then creates a seal against the mating face. The mechanical seal is situated between the pump wet end and electric motor, this forms a seal around the motor shaft to prevent pressurized liquid from escaping and is the main wearing part of any pump. A mechanical seal may leak liquid if the pump is ever run dry or eventually wear out, if not replaced promptly liquid will travel along the shaft and ruin the motor in a very short period of time. High quality replacement mechanical seal with Carbon and Ceramic seal faces from leading seal manufacturers for Koi pond/pool pumps. Pump nameplate missing? Please send your seal sample for identification or e-mail your picture and seal dimensions. Suitable for the following pump models :- MDM 'Sequence' 750 series, 3600SEQ12, 4200SEQ12 8000, 10000, 12000, Sequel 'King Fish' (not suitable for the 1000 model) Kit contents:-1 off - Mechanical seal assembly - 750.04141 off - Body O-ring - 750.0611 off - Slinger - 750.0101 off - Silicone grease (7ml) Seal kits for the 1000, 13000, 15000, 18000 pump models are available from the following link:-https://www.ebay.co.uk/itm/183496712523