--- product_id: 19621974 title: "General Ecology Seagull IV X-1 Replacement Cartridge RS-1SG" brand: "seagulliv" price: "€ 303.93" currency: EUR in_stock: true category: "Seagull Iv" url: https://www.desertcart.gr/products/19621974-general-ecology-seagull-iv-x-1-replacement-cartridge-rs-1sg store_origin: GR region: Greece --- # 1 gpm fast flow rate 1000 gal capacity Self-indicating replacement General Ecology Seagull IV X-1 Replacement Cartridge RS-1SG **Brand:** seagulliv **Price:** € 303.93 **Availability:** ✅ In Stock ## Summary > 💧 Refresh your routine with the ultimate water upgrade! ## Quick Answers - **What is this?** General Ecology Seagull IV X-1 Replacement Cartridge RS-1SG by seagulliv - **How much does it cost?** € 303.93 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/19621974-general-ecology-seagull-iv-x-1-replacement-cartridge-rs-1sg) ## Best For - seagulliv enthusiasts ## Why This Product - Trusted seagulliv brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Smart Savings:** Costs just pennies per gallon—outperforming bottled water on price and sustainability. - • **Swift & Simple Swap:** DIY-friendly self-indicating cartridge replacement keeps your water fresh without hassle. - • **Endurance That Lasts:** Up to 1000 gallons per cartridge means fewer replacements and more peace of mind. - • **Pure Taste, Zero Compromise:** Eliminates chemical, aesthetic & microbiological contaminants for crisp, clean water every time. - • **Versatile Hydration Upgrade:** Perfect for drinks, ice, and food prep—elevate every sip and bite with safer water. ## Overview The General Ecology Seagull IV X-1 Replacement Cartridge RS-1SG delivers high-capacity, chemical-free water purification with a fast 1 gallon per minute flow rate. Featuring Structured Matrix technology, it removes bad taste and contaminants while offering a self-indicating cartridge replacement system lasting up to 1000 gallons. Easy to install and cost-effective, it’s the smart choice for safer, great-tasting water in RV, marine, and residential settings. ## Description Replacement Cartridge (RS-1SG) for Seagull IV X-1 Series Water Purifiers RV/Marine Models. Operating costs at only pennies per gallon make Seagull IV purified water easier, more economical than bottled water. Tech Specs: Self-indicating cartridge replacement. Avg. 1000 gal. capacity. Avg. 1 gpm flow rate. Customers with Seagull IV (CA) Series, California residential models, please order RS-1SG (CA). ## Features - Removes Bad Taste and More: chemical, aesthetic and microbiological contaminants - High Capacity, fast flow chemical-free water purification with Structured Matrix technology - Self-indicating Cartridge Replacement - average lifespan 1000 gallons per cartridge - Easy to install and replace cartridge - do it yourself - Offers great tasting, safer water for drinks, ice-cubes, beverage and food preparation ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002L5AFC | | Best Sellers Rank | #162,599 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,082 in Replacement Under-Sink Water Filters | | Brand Name | SeagullIV | | Customer Reviews | 4.7 4.7 out of 5 stars (127) | | External Testing Certification | CE | | Item Type Name | Water Purification Replacement Cartridge | | Manufacturer | General Ecology, Inc. | | Manufacturer Part Number | 7880001 | | Material Type | Polypropylene (PP) Resin | | Model Number | Seagull IV | | Number of Items | 1 | | Product Benefits | Removes Bad Taste and More: chemical, aesthetic and microbiological contaminants | | Set Name | Seagull IV | | Unit Count | 1 Count | ## Product Details - **Brand:** SeagullIV - **External Testing Certification:** CE - **Material:** Polypropylene (PP) Resin - **Product Benefits:** Removes Bad Taste and More: chemical, aesthetic and microbiological contaminants - **Set Name:** Seagull IV ## Images ![General Ecology Seagull IV X-1 Replacement Cartridge RS-1SG - Image 1](https://m.media-amazon.com/images/I/715SAgLjELL.jpg) ## Questions & Answers **Q: I just bought a home with a seagull IV water microfiltration system. I cannot figure out where / how to replace the filter** A: You need to split the housing open to get to the filter. Remove the band that surrounds the housing by undoing the screw handle. Then expand the band and let it slid off of the housing. You will notice a seam in the middle of the housing, this was covered by the band. You have to separate the upper and lower parts of the housing to get to the filter. Then the filter just unscrews from the upper part, where the inlet and out hoses are attached. Be careful withe the housing, it will dent easily. I have found that using a strap wrench on the bottom portion and tapping lightly on the housing with a rubber mallet will get it to separate. You may need to replace the gasket between the two hosing parts. **Q: Does anyone know if this filter has the nsf and/or ansi certifications that many water filters have?** A: I used to sell the Seagull IV X1 and X2 systems starting back in 1990, in my Kitchen & Bath Showroom and I chose to carry that filtration system because I read the test verified and extremely impressive test data and it was far superior to anything else (without the space and issues and daily yield limits of Reverse Osmosis systems.) At that time, I could swear it had an NSF rating, but don't take my word for it,( its possible it was too expensive for a relatively small company to continually go through testing). I recommended it to many dozens of customers who purchased high end kitchens in NYC and wanted a top quality filter AND good flow rate. I never had a complaint. Many other filters that were available at the time, like the Franke Little Butler did not have the same type of cartridge, flow rate or longevity of Seagull Filter Systems. I remember contractors and homeowners coming back in to show me those other 'ceramic filters' completely covered on the surface with all types of sediment, or foreign particles in the water, and they would slow down to trickle after less than a month in use.( This extreme example was likely due to Pre-War building pipes common in Manhattan). I have owned 4 of these systems, and never had the flow rate slow down or even the taste change appreciable long after the1K or 2K gallon expected life. THe prices have skyrocketed over the years, but this is far more convenient and far less expensive than buying bottled water (of unknown quality) and carrying home thousands of gallons of water. I cant say Im happy about the price of replacement cartridges, but considering the nature of water delivered to the house from reservoirs or groundwater, my opinion is its the safest water to give your family or yourself. I am not in any way related to or have an interest in General Ecology and don't even get trade discounts any longer! **Q: I would like to buy 2 filters and ship them to Germany. Do you ship to Germany?** A: General Ecology, Inc. does not ship directly to Germany, but we do have European Distributors you can purchase from. Please contact Nova Leisure, sales@novaleisure.com / www.novaleisure.com. **Q: Hello is this the model for California or is the good one for microbiological filtering?** A: Looks like the company renamed it, but no, it is not the one for California, which is Seagull IV X-1F (CA). When I called the company a few years back, they explained (if I'm remembering it right) that California politicians passed a law that limited the effectiveness of their filter - politicians, go figure. I realized that I'd been using the wrong one, and immediately ordered this one, now named IV® X-1, the former RS-1SG.I installed this filter back in 1980, when I bought my home, and have been very happy to know it's helped my health all these year. Now it pre-filters the water going into my Kangen water ionizer by Enagic, and my water is both alkalized and has high ORP levels - which I don't really understand - I just drink it! ## Frequently Bought Together - General Ecology Seagull IV X-1 Replacement Cartridge RS-1SG - Camco Tastepure RV Water Filter - New & Advanced RV Inline Water Filter with Flexible Hose Protector - GAC & KDF Filtration - Made in USA - Camping Essentials for Fresh Drinking Water (40043) - Thetford RV Toilet Seal Lube and Conditioner - Toilet Seal Lubricant - 24 oz 36663 --- ## 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.gr/products/19621974-general-ecology-seagull-iv-x-1-replacement-cartridge-rs-1sg](https://www.desertcart.gr/products/19621974-general-ecology-seagull-iv-x-1-replacement-cartridge-rs-1sg) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-08-22*