Description 22451-1 Mechanical Seal is used for Mission Magnum Pumps, 3x2x13, 4x3x13, 5x4x14, 6x5x11, 6x5x14, 8x6x11, 8x6x14, 10x8x14. Type 1-2. seal is identical to Mission pump seal NOV# 22451-1, 648414308 and T1-3.5 is identical to Mission Magnum XP pump seal NOV#24306, 658416102. Mechanical seal (Tungsten carbide faces), P/N: 22451-1, 648414308; 22451-2, 648414340; 22451-3, 648414357; 22451-9A Dimensions: 3.5inch, 2.5 inch, 1.875 inch and 1.5 inch Material: Tungsten Carbide, Viton, SS316 machining parts Seal, Mechanical (Tungsten carbide faces), P/N: 22451-1, 648414308 Seal, Mechanical (ceramic to carbon face), P/N: 22451-2, 648414340 Seal, Mechanical (silicon to tungsten face), P/N: 22451-3, 648414357 Seal, Mechanical (silicon carbide faces), P/N: 22451-9A Packing shaft with lantern ring (Graphite), P/N: 25014-04M-B, 661007005 Packing shaft with lantern ring (King), P/N: 25014-04M-BA, 661007008 Packing shaft with lantern ring (Teflon), P/N: 250147-04M-D, 661007011 Packing shaft with lantern ring (Kevlar), P/N: 25014-04M-C, 661007006 Packing, Shaft -M.S. Backup (Graphite), P/N: 648402600 Ring, Lantern, or Lantern Ring, P/N: 648408607 A set of mechanical seal includes Mechanical seal, 3 pcs packings and a pin.