Supply of 22 Flowserve Make Mechanical Seal Spares For Main Boiler Feed Water Pump Ksb Chtc 6-4 Seal Type: Pto Seal Ring Silcar Fsl Part No: 3 Set Of Packing. 1 Set Consists Of: - Shaft Packing Epr Fsl Part No: P 1 No. Repair Kit 1 Kit Include Compression Unit: 1 No. Collar: 01 No. Back Up Plate: 01 No.