--- product_id: 56149396 title: "3M #70-0203-5277-2" brand: "captain o-ring" price: "NT$920" currency: TWD in_stock: true reviews_count: 10 category: "Captain O Ring" url: https://www.desertcart.tw/products/56149396-3m-70-0203-5277-2 store_origin: TW region: Taiwan --- # NSF 61 certified Buna-N rubber 5.5" ID x 5.88" OD precision fit 3-pack replacement set 3M #70-0203-5277-2 **Brand:** captain o-ring **Price:** NT$920 **Availability:** ✅ In Stock ## Summary > 💧 Seal the deal with confidence — never let a drip cramp your flow! ## Quick Answers - **What is this?** 3M #70-0203-5277-2 by captain o-ring - **How much does it cost?** NT$920 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/56149396-3m-70-0203-5277-2) ## 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 - • **Certified Safe Seal:** Crafted from NSF 61 certified Buna-N rubber for clean, safe drinking water every time. - • **Proudly USA Assembled:** Quality you can trust, assembled in the USA with a warranty backing your peace of mind. - • **Precision Fit Guarantee:** Designed to perfectly fit popular models like Culligan WH-HD200-C and 3M AP801B/T housings. - • **Triple Pack Reliability:** Keep your water filter leak-free with three durable O-rings ready when you need them. - • **Universal Compatibility:** Works seamlessly with top brands including DuPont, Hydronix, Watts, and iSpring for hassle-free replacements. ## Overview Captain O-Ring OR-250 is a 3-pack of high-quality replacement filter O-rings made from NSF 61 certified Buna-N rubber, designed for a precise 5.5" inside diameter and 5.88" outside diameter. Compatible with a wide range of popular water filter housings including Culligan WH-HD200-C, 3M AP801B/T, DuPont, Hydronix, Watts, and iSpring models. Proudly assembled in the USA, these O-rings ensure a reliable, leak-free seal to maintain clean and safe drinking water. ## Description Product description Captain O-Ring - Replacement OR-250 Water Filter Housing O-Rings Captain O-Ring's replacement OR-250 o-rings are compatible with the following filter housings Culligan WH-HD200-C 3M Filtrete 3WH-HD-S01, 3M Aqua Pure AP801B, AP801T, AP802B, AP802T (Not for the original AP801/AP802, only for the newer housings that end in B or T) DuPont WFHD1300 Series, DuPont WFHD13001 Express Water Whole House Filter Housings Glacier Bay HDG4HS4 Hydronix HF45 Series, Aquasure Fortitude Series iSpring WGB21B, WGB12B, WDS150K, WDS80K American Granby housings that call for part # HOR5 (including American Granby HFHPLD10BP, HFHPLD10BP20, and HFHPLD10CP). Nuvo GEN 2 Manor (not for the older GEN 1 Manor housings that take a smaller o-ring) Watts WOR-R Residential Series, WOR-C Commercial Series, WOR-FF Full-Flow Series Frequently Asked Water Filter O-Ring Questions How often do I need to change my filter housing's o-ring? Captain O-Ring's high quality replacement water filter housing o-rings are designed for reliable extended use. Still, it is typically recommended to replace your o-ring on every third filter change to ensure it is in top shape to prevent leaks. Can I use grease or lubricant on these o-rings? Since Captain O-Ring supplies high quality o-rings without surface imperfections or tacky/sticky surface texture, lubrication is typically not needed if the filter housing sealing surfaces are clean and free of debris. Simply wet the o-rings with water before installing. However, if lubrication is preferred, these Buna Nitrile rubber o-rings are compatible with silicone based and petroleum based lubricants, as well as natural lubricants like vegetable oil. What if I don't know what o-ring part number my filter housing needs? Not sure which o-ring part number you need for your filter housing? Use our handy printable water filter housing o-ring size chart. Simply print out the chart and lay your old o-ring on the page to see which o-ring it matches with. You can find the size chart listed as "User Guide [PDF]" under the "Product guides and documents" section or the "downloads" section on this page, depending on your desertcart page layout. ## Features - Part Number: OR-250 (3 Pack) - Alternate Part Numbers: 3M #70-0203-5277-2, Aquasure AP-HF45-ORING, DuPont WFAO100, Express Water PRTORINGWH3, Hydronix HF45-ORING, American Granby HOR5, Watts WOR-FF, iSpring ORB1X2 - Compatible with: Culligan WH-HD200-C, 3M Filtrete 3WH-HD-S01, 3M Aqua Pure AP801B, AP801T, AP802B, AP802T (Not for the original AP801/AP802, only for the B/T housings), Aquasure Fortitude Series, DuPont WFHD1300/WFHD13001, Express Water Whole House Filter Housings, Glacier Bay HDG4HS4, Hydronix HF45 Series, American Granby HFHPLD10BP, HFHPLD10BP20, and HFHPLD10CP, Watts WOR-R Residential Series, Watts WOR-C Commercial Series, and Watts WOR-FF Full-Flow Series, Nuvo GEN 2 Manor (not for the older GEN 1 Manor), and iSpring WGB21B, WGB12B, WDS150K, WDS80K. - Molded from NSF 61 certified buna-n rubber for safe and clean drinking water. O-Ring is approximately 5-1/2" Inside Diameter x 5-7/8" Outside Diameter. - Includes 3 replacement o-rings (also called seals or gaskets) to repair your leaking water filter housing. Manufactured and Warrantied by Captain O-Ring LLC. Proudly assembled in the USA! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B074THDBQ2 | | Best Sellers Rank | #88,815 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #49 in Undersink Water Filtration Replacement Parts | | Brand | Captain O-Ring | | Brand Name | Captain O-Ring | | Color | black | | Customer Reviews | 4.7 out of 5 stars 283 Reviews | | EU Spare Part Availability Duration | 1 Years | | Item Diameter | 5.5 Inches | | Manufacturer | Captain O-Ring LLC | | Material | Buna-N Rubber | | Material Type | Buna-N Rubber | | Model | OR-250 | | Nominal Inside Diameter | 5.5 Inches | | Nominal Outside Diameter | 5.88 Inches | | Number of Pieces | 3 | | Part Number | OR-250 | | Set Name | 3-pack | | UPC | 611138349659 | | Unit Count | 3.0 Count | ## Product Details - **Brand:** Captain O-Ring - **Color:** black - **Item Diameter:** 5.5 Inches - **Material:** Buna-N Rubber - **Nominal Inside Diameter:** 5.5 Inches ## Images ![3M #70-0203-5277-2 - Image 1](https://m.media-amazon.com/images/I/71orezZBa7L.jpg) ![3M #70-0203-5277-2 - Image 2](https://m.media-amazon.com/images/I/81XB7wPOlJL.jpg) ![3M #70-0203-5277-2 - Image 3](https://m.media-amazon.com/images/I/81aPg6j0R+L.jpg) ![3M #70-0203-5277-2 - Image 4](https://m.media-amazon.com/images/I/71OlO9RMZPL.jpg) ![3M #70-0203-5277-2 - Image 5](https://m.media-amazon.com/images/I/716v1IxPn4L.jpg) ## Questions & Answers **Q: Does this fit the culligan wh-hd200** A: Hello. Yes, this is the o-ring for the Culligan WH-HD200-C. **Q: Does this ring fit with the rfc-bbsa filters?** A: Hello. The rfc-bbsa, is a filter cartridge that goes inside of a filter housing. Do you know he make/model of your filter housing (the plastic housing that screws into the filter head/cap)? If you know the make/model of the housing, we can determine the o-ring that is compatible with it. **Q: What is the correct ring for Pentek 150237, it is not listed in your user guide?** A: Hello. The 151122 o-ring is the o-ring used in the 150237. You can find it at the link here: https://www.amazon.com/dp/B019Y85PR6 **Q: should i use a little oil on these?** A: I needed them for my water filtration system, and no oil was needed. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by P***E on April 5, 2026* ### ⭐⭐⭐⭐⭐ Review *by H***. on March 6, 2026* ### ⭐⭐⭐⭐⭐ Review *by P***. on December 29, 2025* --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tw/products/56149396-3m-70-0203-5277-2](https://www.desertcart.tw/products/56149396-3m-70-0203-5277-2) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-05-26*