---
product_id: 164694611
title: "APEC Water Systems Set 3 Pcs 3.5\" O.D. Replacement ORing for Reverse Osmosis Water Filter Housings with Lubricant"
brand: "apec water systems"
price: "€ 33.46"
currency: EUR
in_stock: true
reviews_count: 12
url: https://www.desertcart.sk/products/164694611-apec-water-systems-set-3-pcs-3-5-o-d
store_origin: SK
region: Slovakia
---

# APEC Water Systems Set 3 Pcs 3.5" O.D. Replacement ORing for Reverse Osmosis Water Filter Housings with Lubricant

**Brand:** apec water systems
**Price:** € 33.46
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** APEC Water Systems Set 3 Pcs 3.5" O.D. Replacement ORing for Reverse Osmosis Water Filter Housings with Lubricant by apec water systems
- **How much does it cost?** € 33.46 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/164694611-apec-water-systems-set-3-pcs-3-5-o-d)

## Best For

- apec water systems enthusiasts

## Why This Product

- Trusted apec water systems brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

APEC Water Systems Set 3 Pcs 3.5" O.D. Replacement ORing for Reverse Osmosis Water Filter Housings with lubricant

## Features

- About this item
- IMPORTANT: A set of 3 O-rings for standard filter housings of APEC RO systems. Please kindly check the second gallery image for compatibility of this O-Ring set
- Diameter 3. 5" OD
- Light Weight, Easy Install and Unload
- Manufactured using NSF-compliant materials
- Comes with 6 grams lubricant
- ›See more product details

## Images

![APEC Water Systems Set 3 Pcs 3.5" O.D. Replacement ORing for Reverse Osmosis Water Filter Housings with Lubricant - Image 1](https://m.media-amazon.com/images/I/71vH9NLKubL.jpg)

## Available Options

This product comes in different **Pattern** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Worked perfectly the first time. Be sure to order the correct version.
  

*by A***R on Reviewed in the United States on March 28, 2019*

I had no trouble replacing the o-rings for the three primary filters on my APEC Reverse Osmosis system and these o-rings worked perfectly in every respect.I did read some reviews indicating the o-rings were thinner than the originals, had a larger outside diameter than the originals and/or did not seal properly. I saw none of those problems and think I may know how to avoid those issues:• First and foremost, be sure to order the correct version. There is a Type “A” for systems manufactured before a certain pair of dates and a Type “B” for systems manufactured after those dates. Clicking on the Type “B” box will provide those dates. Be sure to select the correct (“A” or “B”) box before proceeding with ordering. My system was manufactured in 2018 so I ordered Type “B” and the replacement o-rings appeared identical to the originals.• I used food grade o-ring grease on all 3 o-rings and on the flat rubber washers at each end of the two carbon filters which I was installing. I spread the grease thinly but thoroughly over the surface of all items. The grease prevents friction loads which can damage rubber parts and can give a false indication of the torque applied. There are many brands available; I used Haynes Lubri-Film sanitary lubricant which costs about $8 for a  4 oz tube but will lubricate many o-rings per tube.• I used the wrench provided with the original set to tighten each filter case after installing. I pulled until each was a little more than firm; perhaps a 5-8 lb pull on the wrench.Good luck. I hope this has been helpful.

### ⭐⭐⭐⭐ 







  
  
    Little bit on the large side but no leaks.
  

*by K***I on Reviewed in the United States on November 26, 2017*

Figured I would change the o-rings with the filters to lessen the chance of any leaks.  These o-rings are the APEC brand and not aftermarket.  I put a little bit of  plumbers silicone grease on them prior to installing.  O-rings were a little bit oversized which I thought was odd.  I installed them best as possible and no leaks.  Due to size versus what was in there from new I gave 4 stars instead of 5.  So far so good, no leaks.  I have the ROES-50 system on my kitchen sink, great low cost system that removes all weird taste from my municipal supplied water.  Glad I have this system.Update:  12/2/20 - product page has changed and now there is a set B available.  Per the ordering instructions my filter canister housings matched their callout for set B.  Upon installation the B O-Rings were undersized and not laying flat in the housing channels.  I reinstalled the set A from the last service, thankfully no leaks.  Not sure what the problem is with getting O-Rings that seat correctly.  Amazon made right as usual and refunded the purchase price.  I made notes and will order set A next go around and see what happens.

### ⭐⭐⭐⭐⭐ 







  
  
    Works Well!
  

*by W***R on Reviewed in the United States on April 28, 2021*

This was a perfect fit for my water system. Just make sure to carefully look at the photo description as this company makes two sizes! it's very easy to accidentally choose the wrong one if you are not paying attention. All you have to do is match the filter housing to the photo and you will know if it will fit or not. I applied some food-grade silicone to the O-ring to give it a better seal. You can also put some of that silicone on the rubber gaskets on both sides of the carbon filters (stages 2-3). This helps it seal much better. I noticed that if I did not apply the silicone to the carbon filters there is usually a buildup of gunk (??) on the top seal which tells me the seal may not have been performing as it should. I love the APEC Roes-50 water system! It has made a huge difference in our water quality (and we sure don't miss having to carry all of those heavy 5-gallon water bottles from the store)!

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-24*