What is it's shelf life?

Would assume it last awhile depending on how and where you store it. We buy them in bulk and haven’t had issues with them but keep them stored indoors.

Will this fit sterling water filter

Not sure. I have just used this filter on my whole house filter and wanted to replace filter with same kind have been using. Whole house filter made by A O Smith.

The price is nearly double what you can buy in stores. Why?

i just found it on EBAY. I found filter on Amazon, But they sent me wrong size filter and had to return.

Does this o-ring come with a small tube of grease?

Yes. The o-ring by itself from amazon came with a small packet of very sticky clear grease. I have used vasoline before and it seemed to work just as well.on 1st 4 filters.

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AO-WH-LG-OR Genuine Replacement | O-Ring | for 4.5" Filters

Product ID: 189163553

Details

Brand
A. O. Smith
Color
Black
Item Diameter
5.48 inches
Material
Rubber
Nominal Inside Diameter
5.48 inches

💧Ensures leak-proof water-tight seal

♻️Durable synthetic rubber material

🛠️5.48 inch diameter precision fit

S$26

Duties & taxes included

In stock

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Description

💧 Seal your home’s hydration with confidence — don’t let leaks cramp your flow!

PREMIUM DURABILITY - Crafted from high-quality synthetic rubber for long-lasting performance and resistance to wear.
LEAK FREE CONFIDENCE - Maintains a water-tight seal to protect your whole house filtration system from leaks and inefficiencies.
PERFECT FIT EVERY TIME - Specifically designed for 4.5 inch filter housings to guarantee seamless installation.
TRUSTED BRAND ASSURANCE - Genuine A. O. Smith part ensures compatibility and optimal contaminant removal.
EASY REPLACEMENT ROUTINE - Ideal for filter changes every 3-6 months, keeping your water system running flawlessly.

The AO Smith AO-WH-LG-OR is a 5.48 inch diameter synthetic rubber O-ring designed to fit most 4.5 inch whole house water filter housings. Engineered for a perfect, leak-proof seal, it ensures optimal filtration system performance and durability. Ideal for routine filter replacements every 3-6 months, this genuine A. O. Smith part guarantees compatibility and long-lasting reliability.

Specifications

ASIN	B07ZG3BD5Y
Best Sellers Rank	#130,505 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #37 in Faucet O-Rings
Brand Name	A. O. Smith
Color	Black
Customer Reviews	4.7 4.7 out of 5 stars (243)
Item Diameter	5.48 inches
Item Highlight	Replacement for Housings for 4.5 In Filters \| 5.48 In / 14 Cm Diameter \| Prevents Leaks
Item Weight	0.02 kg
Manufacturer	AO Smith
Material Type	Rubber
Model	AO-WH-LG-OR
Nominal Inside Diameter	5.48 inches
Nominal Outside Diameter	5.48 inches
Number of Items	1
Number of Packs	1
Number of Pieces	1
Part Number	AO-WH-LG-OR
UPC	193074743154
Unit Count	1 Count

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