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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Pentair 87300400 Body O-Ring

Product ID: 9107048

Details

Brand
Pentair
Color
black
Global Trade Identification Number
Manufacturer
Pentair
UPC
788379693350

💧Superior water-tight seal

♻️Durable, long-lasting material

🛠️Precision 9.75-inch fit

EC$99

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Description

💧 Seal the deal with Pentair’s precision O-ring – your pool’s silent guardian!

TRUSTED QUALITY - Pentair brand reliability with 4.5-star rating from 1,371 users
LIGHTWEIGHT DURABLE - Only 1.28 oz but built to withstand poolside conditions
PERFECT COMPATIBILITY - Seamlessly fits Pentair Clean & Clear, Warrior, EasyClean & Predator systems
PRECISION ENGINEERING - Exact 9-3/4 inch dimensions ensure leak-proof performance
EFFORTLESS MAINTENANCE - Quick replacement keeps your pool filter running like new

The Pentair 87300400 Body O-Ring is a high-precision replacement seal designed for multiple Pentair pool and spa filter systems. Measuring 9.75 inches in diameter and 0.25 inches thick, it ensures a secure, leak-proof fit to maintain optimal filtration performance. Lightweight yet durable, this trusted Pentair component is highly rated by thousands of pool owners for reliable, long-lasting use.

Specifications

ASIN	B004VU8T08
Best Sellers Rank	#104,228 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2,126 in Pool & Spa Replacement Parts
Brand	Pentair
Brand Name	Pentair
Color	black
Customer Reviews	4.5 out of 5 stars 1,371 Reviews
Global Trade Identification Number	00788379693350
Included Components	Includes : 1 x Pentair 87300400 Body O-Ring Replacement
Item Diameter	0.25 inches
Item Weight	1.28 ounces
Manufacturer	Pentair
Model	87300400Z
Nominal Outside Diameter	9.75 inches
Number of Items	1
Number of Packs	1
Number of Pieces	1
Part Number	87300400
UPC	788379693350
Unit Count	1 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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EC$99

Duties & taxes included

In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Saint Vincent and the Grenadines.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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