• 3/4" Shaft Seal• Premium Shaft Seal • Buna / Graphitic Plastic SS with Ceramic Seat• Industry Standard for General Pool and Spa ApplicationsPS/PSR-201 Shaft Seal Assembly• 3/4" 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 201 Series Mechanical Seal• Jacuzzi Magnum• Jacuzzi RC-Series• ITT Marlow Argonaut• ITT Marlow Mardur• American Products Bronze-Noryl• Pentair AH Series• Purex / Hydrotech L-Series (071728)• Premier 120T• Premier 225/255 MKII• Premier 300/325/355• Premier 725/756• Starite DJ/JS/JT• Starite Pre Jan 2001 (U109-433SS)• Starite Dura-Glas (Pre-1998) • Starite Dura-Glas II• Starite Dura-Jet• Starite Dyna-Glas• Starite Dyna-Max• Starite Dyna-Jet• Starite JW/JWA• Starite Max-E-Glas II • Swim Quip XL, VI/XL, VII• Wayne Water Systems (15693)The PS/PSR-201 Replaces Other Mechanical Seals:• U.S. Seal VG-201 Value• U.S. Seal PS-4265 Spas• U.S. Seal PS-3868 Salt / Ozone• U.S. Seal PS-1902 Silicone Carbide• American Products 395005• Hayward SPX1600Z2• ITT Marlow 38592-00• Jacuzzi 10-1502-09• Pentair 071728• Hydropump 354001• Premier 31-812• Sta-Rite 37400-0027S• Sta-Rite U109-358SS• Sta-Rite U109-372SS• Sta-Rite 37400-0027• Sta-Rite 37400-0027S• Sta-Rite 17351-0101S• Swim Quip 37407-0009• Wayne Water Systems 15693