When you install the O ring do you need to lubricate it? If so, what do you recommend?

I used a silicone lubricant on the O ring to make it easier to lock the cover. With the silicone the cover slides down onto the filter body. If you don't use it the ring may slide out of its groove and you will have cover that's not sealed, so,yes, use the silicone

What is the material of this o-ring?

The material for the o-ring is Black flexible rubber. Mine is holding up really well and fits perfectly.

Does this fit a hayward de 4800

Not sure what a Hayward de4800 is but this particular O-ring fits my Hayward cx90 and is about 10” in diameter. Hope this helps

Hayward CX900F Filter Head O-Ring Replacement for Hayward Star-Clear Plus Cartridge Filter Series and Separation Tank

Product ID: 367070929

Details

Brand
Hayward
Color
Black
Manufacturer
Hayward
Material
Metal
UPC
610377209441

🖤Durable Buna-N nitrile rubber seal

🌡️Operates from -40°C for versatile use

🛠️Precision fit for Hayward Star-Clear series

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€ 75.90

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Description

🖤 Seal the deal with unmatched durability and fit!

PREMIUM MATERIAL - Crafted from high-grade Buna-N nitrile rubber for superior durability and chemical resistance.
TEMPERATURE TOUGH - Reliable performance in extreme conditions from -40°C, keeping your filtration flawless year-round.
TRUSTED BY THOUSANDS - Backed by 1,500+ positive reviews and a 4.6-star rating, join the community upgrading their pool care.
SEAMLESS COMPATIBILITY - Perfectly engineered for Hayward Star-Clear Plus filters, ensuring hassle-free replacement.
LIGHTWEIGHT EFFICIENT - At just 1.3 ounces, it delivers a secure seal without adding bulk or complexity.

The Hayward CX900F Filter Head O-Ring is a high-quality replacement seal designed specifically for Hayward Star-Clear Plus Cartridge Filter Series and Separation Tanks. Made from durable Buna-N nitrile rubber, it ensures a tight, reliable seal that withstands temperatures as low as -40°C. Lightweight and precision-engineered, this O-ring is trusted by thousands of pool owners for maintaining optimal filtration performance.

Specifications

ASIN	B004UHGB8E
Brand	HAYWARD
Brand Name	HAYWARD
Colour	Black
Country of Origin	USA
Customer Reviews	4.6 out of 5 stars 1,534 Reviews
Global Trade Identification Number	00610377209441
Item Type Name	filter
Item Weight	1.3 Ounces
Manufacturer	filter
Material	Nitrile Rubber
Material Type	Nitrile Rubber
Model Number	CX900F
Number of Pieces	1
Part Number	CX900F
Temperature Range	-4E+1 Degrees Celsius
UPC	610377209441 799331488112 788660888120
Unit Count	1.00 Count

Reviews

D**E

good fit

2.11.2018

A**R

Perfect

18.04.2025

N**.

No fit on my Hayward

19.11.2024

R**W

Perfect replacement, works great for filters that take the 1700 filters.

9.10.2018

J**Z

These last about 4 or 5 years

22.02.2022

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€ 75.90

Duties & taxes included

In stock

Sold byAmazon FranceDelivered 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 France.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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