• 5/8" Shaft • Premium Shaft Seal • Buna / Graphitic Plastic SS with Ceramic Seat• Industry Standard for General Pool and Spa ApplicationsPS/PSR-200 Shaft Seal Assembly• 5/8" Shaft • Premium Seal • Buna / Graphitic Plastic SS with Ceramic Seat• Industry Standard for General Pool and Spa ApplicationsPLEASE NOTE: Not Recommended in Pools or Spas with Ozonators, Bromine or Chlorine Generators. Systems with Ozonators, Bromine or Chlorine Generators Pool Pumps That Use The 200 Series Mechanical Seal• Aqua-Flo Circ-Master• Aqua-Flo Dominator (High/Med Head)• Aqua-Flo Flo-Master (92500150)• Aqua-Flo Pond-Flo• Aqua-Flo Tub-Master• Arneson Spool Sweep• Astral Pool Sena• Baker-Hydro 35B1178• Doughboy 306-1006• Hayward Cast Iron (SPX1250X72)• Jacuzzi Cygnet• Jacuzzi A, J, JCM Series• Jacuzzi K, KM Series• Jacuzzi LCM-Series• Jacuzzi LCU-Series• Jacuzzi LR-Series• Jacuzzi Vector (LVL)• Purnex / Hydrotech Challenger• Purnex / Hydrotech Dynamite• Purnex / Hydrotech Dynamo , Dynatron• Purnex / Hydrotech Pinnacle• Starite Dura-Glas PE, PEA, P2R, P2RA• Starite Max-E-Glas PE, PEA, P2R, P2RA• Starite SuperMaxThe 200 Series Replaces Other Mechanical Seals:U.S. Seal VG-200 ValueU.S. Seal PS-3960 SpasU.S. Seal PS-3867 Salt / Ozone U.S. Seal PS-1901 Silicone CarbideAqua-Flo 92500151Aqua-Flo 92500150Arneson A-8Astral Pool Series 1800Baker Hydro 35B1178Doughboy 306-1006Hayward SPX1250XZ2Hayward SPX2700SAJacuzzi 10-0002-06Jacuzzi 10-1436-00Jacuzzi 10-0002-06Pentair 354545Speck Pump 2920060603Speck Pump 60603-200Sta-Rite 17304-0100Sta-Rite 354545 S