---
product_id: 176410469
title: "Captain O-Ring - K4 Replacement O-Ring Kit for OmniFilter K4, CBF1, CBF3, SFM2, U30, USM2, OT32, RO2000, RO2050, and More (2 Sets, 8 Orings)"
brand: "captain o-ring"
price: "KSh3875"
currency: KES
in_stock: true
url: https://www.desertcart.co.ke/products/176410469-captain-o-ring-k4-replacement-o-ring-kit-for-omnifilter
store_origin: KE
region: Kenya
---

# Leak-proof 4 sizes 2 sets Captain O-Ring - K4 Replacement O-Ring Kit for OmniFilter K4, CBF1, CBF3, SFM2, U30, USM2, OT32, RO2000, RO2050, and More (2 Sets, 8 Orings)

**Brand:** captain o-ring
**Price:** KSh3875
**Availability:** ✅ In Stock

## Summary

> 💧 Seal the Deal with Captain O-Ring!

## Quick Answers

- **What is this?** Captain O-Ring - K4 Replacement O-Ring Kit for OmniFilter K4, CBF1, CBF3, SFM2, U30, USM2, OT32, RO2000, RO2050, and More (2 Sets, 8 Orings) by captain o-ring
- **How much does it cost?** KSh3875 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/176410469-captain-o-ring-k4-replacement-o-ring-kit-for-omnifilter)

## Best For

- captain o-ring enthusiasts

## Why This Product

- Trusted captain o-ring brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **📦 Value Pack:** Includes 2 sets with 8 total O-rings, ensuring you have spares when you need them.
- • **🔍 Precision Fit:** Engineered for compatibility with a wide range of OmniFilter models.
- • **💪 Durable Material:** Crafted from high-quality Buna-N rubber for long-lasting performance.
- • **🔄 Easy Installation:** Quickly replace your old O-rings and restore your water system's efficiency.
- • **🛡️ Trusted Quality:** Manufactured by Captain O-Ring LLC, a leader in sealing solutions with decades of expertise.

## Overview

The Captain O-Ring K4 Replacement O-Ring Kit offers a comprehensive solution for fixing leaks in your water system. With 4 different sizes and a total of 8 O-rings, this kit is compatible with numerous OmniFilter models and is made from durable Buna-N rubber, ensuring a reliable and long-lasting seal.

## Description

Captain O-Ring - K4 Replacement O-Ring Kit for OmniFilter K4, CBF1, CBF3, SFM2, U30, USM2, OT32, RO2000, RO2050, and More (2 Sets, 8 Orings)

## Features

- The Replacement OmniFilter K4 O-Ring Kit (also called K4-4PAK, K4-R, K4-04, K4-DC6-S18) contains 4 different o-ring sizes to fix your leaking water system.
- This convenient 2 set package contains 2 of each size, for 8 o-ring gasket seals total.
- Compatible with: OmniFilter CBF1, CBF3 Series A, CBF20, OB3, OB5, OT32 Series A, Omni Super, Omni Deluxe, Omni Regular, OT5, RO2000, ROT2000-TDS, R12, R14, SFM2 Series A, Total 2, Total Plus, UC2, U30, U400, U450, U500, U600, U700; Culligan US-316; DuPont WFDW12009W, WFDW12000, WFDW13000, WFCH1
- Material: Buna-N (nitrile butadiene rubber)
- Manufactured and Warrantied by Captain O-Ring LLC, with decades of experience in the sealing and chemical industry.

## Images

![Captain O-Ring - K4 Replacement O-Ring Kit for OmniFilter K4, CBF1, CBF3, SFM2, U30, USM2, OT32, RO2000, RO2050, and More (2 Sets, 8 Orings) - Image 1](https://m.media-amazon.com/images/I/71pdxhGkbcL.jpg)
![Captain O-Ring - K4 Replacement O-Ring Kit for OmniFilter K4, CBF1, CBF3, SFM2, U30, USM2, OT32, RO2000, RO2050, and More (2 Sets, 8 Orings) - Image 2](https://m.media-amazon.com/images/I/61uGj6LVfzL.jpg)
![Captain O-Ring - K4 Replacement O-Ring Kit for OmniFilter K4, CBF1, CBF3, SFM2, U30, USM2, OT32, RO2000, RO2050, and More (2 Sets, 8 Orings) - Image 3](https://m.media-amazon.com/images/I/61SAT7kk2RL.jpg)
![Captain O-Ring - K4 Replacement O-Ring Kit for OmniFilter K4, CBF1, CBF3, SFM2, U30, USM2, OT32, RO2000, RO2050, and More (2 Sets, 8 Orings) - Image 4](https://m.media-amazon.com/images/I/719ym33P+0L.jpg)
![Captain O-Ring - K4 Replacement O-Ring Kit for OmniFilter K4, CBF1, CBF3, SFM2, U30, USM2, OT32, RO2000, RO2050, and More (2 Sets, 8 Orings) - Image 5](https://m.media-amazon.com/images/I/61a+tcXuWCL.jpg)

## Questions & Answers

**Q: will this fit the ot 32 series b housing?**
A: Hello.  Yes, the Omnifilter OT32 uses these K4 o-rings.

**Q: I need a replacement ring for my saluspa miami filter. Where is this product?**
A: Hello.  While this product is manufactured by Captain O-Ring LLC in New Jersey, it is shipped directly from Amazon.  Amazon stores this product at fulfillment centers around the country and ships from the closest fulfillment center to you.  You can see the estimated delivery date near the "add to cart button" to ensure it will arrive in time for your need.

**Q: Will this work with Omnifilter OB1 with the blue o ring?**
A: Hello.  This is not the same as the OK25 o-ring kit that works with the OB1 filter housing.

**Q: Will these fit the omni u500 with the blue gasket ?**
A: Hello.  Yes, this will work with the U500.  This kit includes four different sizes, two of each size.  So two of these o-rings will fit your U500 canister(s).

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**Shop now:** [https://www.desertcart.co.ke/products/176410469-captain-o-ring-k4-replacement-o-ring-kit-for-omnifilter](https://www.desertcart.co.ke/products/176410469-captain-o-ring-k4-replacement-o-ring-kit-for-omnifilter)

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-23*