I need an o ring for Pentair 100. What is the correct replacement o rung

If you are referring to the Pentair Clean & Clear 100 Cartridge Filter, then this O-Ring is the correct O-Ring for your Filter Tank. This O-Ring is 9 3/4" in diameter. It is designed to be stretched out and around the tank in order to create a tight seal along the filter tank lid. The best way to go about installing this O-Ring would be to first stretch the O-Ring onto the lid (or top half) of the filter tank until it is properly seated in the groove provided for the tank O-Ring, then place the lid onto the tank.

Seller, is this oem or not? if oem please update the listing.

Hello, I do not know if this is OEM, or not. What I can say, assuredly, is that it is a perfect fit for this Pentair, was easy to install with a little WD-40 to keep it soft, and it absolutely fixed the slow seepage caused by the other 6-year-old worn-out O-ring.

Will this fit a CCP320 system?

I don't know, but if you google ccp320, you will be able to access the parts list, there you will be able to get the correct part. Good luck.

Will this fit a pentair lid 178553

I do not know. I used it on pentair clean and clear cp320. Lid is p/n 178551. Not sure about 178553

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🛠️ Upgrade your pool’s heart with precision and style!

PRECISION ENGINEERING - Exact 9-3/4 inch dimensions ensure leak-proof sealing every time
TRUSTED BRAND QUALITY - Pentair reliability means peace of mind for your pool investment
EFFORTLESS MAINTENANCE - Quick replacement keeps your pool system running smoothly
LIGHTWEIGHT DURABILITY - Only 36g yet built to withstand poolside wear and tear
SEAMLESS COMPATIBILITY - Fits top Pentair pool & spa filters for hassle-free upgrades

The Pentair 87300400 Body O-Ring is a precision-engineered replacement seal designed for multiple Pentair aboveground pool and spa filter systems. Measuring 9-3/4 inches square and crafted from durable black material, it ensures a secure, leak-proof fit to maintain optimal filtration performance. Lightweight and easy to install, this genuine Pentair part guarantees reliable, long-lasting pool maintenance.

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Manufacturer	Pentair
Part Number	87300400
Product Dimensions	24.77 x 24.77 x 0.64 cm; 36.29 g
Item model number	87300400Z
Colour	black
Item Package Quantity	1
Usage	Above ground pool and spas
Batteries included?	No
Batteries Required?	No
Item Weight	36.3 g

Pentair 87300400 Body O-Ring

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