--- 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: "β‚Ή 2346" currency: INR in_stock: true category: "Captain O Ring" url: https://www.desertcart.in/products/176410469-captain-o-ring-k4-replacement-o-ring-kit-for-omnifilter store_origin: IN region: India --- # NSF 61 certified safe 8 precision O-rings Proudly USA assembled 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:** β‚Ή 2346 **Availability:** βœ… In Stock ## Summary > πŸ’§ Seal the deal with Captain O-Ring – never let a drip cramp your style! ## 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?** β‚Ή 2346 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/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 - β€’ **Trusted Quality:** Manufactured and warrantied by Captain O-Ring LLC, a leader in plumbing seals - β€’ **Double the Value:** Two packs with 8 O-rings ensure you’re stocked for multiple repairs - β€’ **Premium Material:** Made from NSF 61 certified Buna-N rubber for clean, safe drinking water - β€’ **Complete Leak Fix Kit:** 2 sets with 4 different O-ring sizes cover all your OmniFilter needs - β€’ **Universal Compatibility:** Fits 15+ major filter models including OmniFilter, Culligan, DuPont & more ## Overview The Captain O-Ring K4 Replacement Kit includes 8 high-quality Buna-N rubber O-rings in 4 sizes, compatible with a wide range of OmniFilter and other major water filtration systems. NSF 61 certified for safe drinking water, this USA-assembled kit offers a reliable, long-lasting solution to leaks, backed by Captain O-Ring LLC’s trusted warranty. ## 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): desertcart.com: Tools & Home Improvement ## 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; and Falsken Heater Treater [FAL-OR-KIT / The Heater Treater 10/20 Replacement O-Ring Kit]. - Molded from NSF 61 certified buna-n rubber for safe and clean drinking water. - Manufactured and warrantied by Captain O-Ring LLC. Proudly assembled in the USA! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08126ZTYT | | Best Sellers Rank | #176,139 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #76 in Faucet O-Rings | | Brand Name | Captain O-Ring | | Color | Black (Rubber) | | Customer Reviews | 4.3 4.3 out of 5 stars (170) | | Manufacturer | Captain O-Ring LLC | | Material Type | Synthetic Rubber | | Number of Items | 8 | | Number of Packs | 2 | | Number of Pieces | 8 | | Part Number | OmniFilter-K4-2set | | Set Name | OmniFilter K4 O-Ring Kit (2 Sets) | | UPC | 604015686640 | | Unit Count | 1 Count | ## Product Details - **Brand:** Captain O-Ring - **Color:** Black (Rubber) - **Manufacturer:** Captain O-Ring LLC - **Material:** Synthetic Rubber - **UPC:** 604015686640 ## 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/41Oo-WUy6GL.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/51N5DrNSe9L.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/51iZ+FK63FL.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/51XUX9OsMjL.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/51GwrxCxezL.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). --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.in/products/176410469-captain-o-ring-k4-replacement-o-ring-kit-for-omnifilter](https://www.desertcart.in/products/176410469-captain-o-ring-k4-replacement-o-ring-kit-for-omnifilter) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-08-24*