[Fit Perfectly]This locking ring replacement for pool pumps is used to replace damaged, deformed, and unsealed pool cover pumps. Designed to lock and hold the lid and O-ring assemblies down in place on the pool pumps, get your pool pump running well again and enjoy the summer. [Compatibility]Pool Spa Pump Parts 357199 compatible with only the Whisper flo and the Intelliflo and Intelliflo VSF. It will not work on the Superflo or Superflo VS pump. [High -Quality]It has been well tested by the manufacturer. Durable and abrasion resistant - placed through extensive tension test to prove high quality durability and ensure longevity. [Easy to Install]First you can simply turn off the system. Release any air. Rotate the locking ring counterclockwise. You may need to use a little bit of strength once in a while to make sure it comes off. Remove the lid from the locking ring. Place the old lid into your new locking ring and tighten it back onto the system. Colour:Photo Color Material:Plastic Package Contents: 1x Pool Pump Parts Locking Ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.