has anyone else found a slimy mold on top of this filter (the center ring) when replacing it for new?

That's the filter doing it's job.

How can i get a o ring for a model ao-wh-prel filter housing ?

I think Amazon has them, Lowes, or AO Smith.

Where are these manufactured? one site stated taiwan, but would like confirmation of that. thanks.

They are made in Taiwan, along with 75 percent of everything sold in the states. I've used these filters for the past few years and it does a very good job.

Great for well water. Get charcoal filter. Great drinking water

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AO Smith AO-WH-PREL-RCP - Carbon Sediment Filter Replacement 4.5 Inch - 5 Micron Filtration

Product ID: 260028253

Details

Brand
A. O. Smith
External testing certification
ISO
Item weight
0.01 Ounces
Material
Carbon
Product benefits
Reduces

🏠Whole house sediment reduction

💧5 micron ultra-fine filtration

🔄Easy DIY replacement every 6 months

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B/.222

Duties & taxes included

In stock

Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Elevate your home’s water game with effortless purity!

PLUG PLAY CONVENIENCE - No plumber needed—replace your filter effortlessly every 6 months and keep your system running smoothly.
BUILT FOR BUSY HOUSEHOLDS - Large 4.5-inch filter capacity designed to support families of 4+ without frequent changes.
CERTIFIED GENUINE QUALITY - ISO-certified, genuine A. O. Smith filter ensures optimal contaminant removal and system longevity.
EXTEND APPLIANCE LIFESPAN - Protect your appliances by reducing sediment buildup, saving you costly repairs and replacements.
CRYSTAL CLEAR WATER EVERY TAP - 5 micron filtration removes sediment invisible to the naked eye for pristine water throughout your home.

The AO Smith AO-WH-PREL-RCP is a certified 4.5-inch carbon sediment filter replacement designed for whole house filtration systems. Featuring 5 micron filtration, it effectively reduces sediment smaller than the human eye can see, supporting households of 4 or more. Easy to replace every 6 months without professional help, this genuine A. O. Smith filter ensures continued contaminant removal and extends the lifespan of your home appliances.

Specifications

ASIN	B07R18MYYD
Brand Name	A. O. Smith
Customer Reviews	4.7 4.7 out of 5 stars (746)
External Testing Certification	ISO
Item Weight	0.01 Ounces
Manufacturer	AO Smith
Manufacturer Part Number	Replacement Cartridge
Material Type	Carbon
Model Number	Replacement Cartridge
Number of Items	1
Product Benefits	Reduces Sediment
Unit Count	1 Count

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TrustScore 4.5 | 7,300+ reviews

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