--- product_id: 45678160 title: "3\" UNISEAL Flexible Tank Adapter Made in the USA (Bulkhead) - 5 Pack" brand: "green goods" price: "Β₯9774" currency: JPY in_stock: true category: "Green Goods" url: https://www.desertcart.jp/products/45678160-3-uniseal-flexible-tank-adapter-made-in-the-usa-bulkhead store_origin: JP region: Japan --- # TPE rubber resists acids & oils Fits 3" Schedule 40 PVC pipes 65 PSI pressure rating 3" UNISEAL Flexible Tank Adapter Made in the USA (Bulkhead) - 5 Pack **Brand:** green goods **Price:** Β₯9774 **Availability:** βœ… In Stock ## Summary > πŸ”§ Seal smarter, not harder β€” the flexible bulkhead adapter that means business. ## Quick Answers - **What is this?** 3" UNISEAL Flexible Tank Adapter Made in the USA (Bulkhead) - 5 Pack by green goods - **How much does it cost?** Β₯9774 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/45678160-3-uniseal-flexible-tank-adapter-made-in-the-usa-bulkhead) ## Best For - green goods enthusiasts ## Why This Product - Trusted green goods brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Durability That Lasts:** Crafted from premium TPE rubber, resisting acids, oils, grease, gasoline, and sewage for long-term reliability. - β€’ **Unmatched Versatility:** Seamlessly adapts to curved & irregular tank surfaces where traditional fittings fail. - β€’ **Effortless Installation:** Single-piece design eliminates bolts and washersβ€”cut, insert, and push for a liquid-tight fit in minutes. - β€’ **Pressure-Ready Performance:** Withstands up to 65 PSI pressure and suction, ensuring a leak-proof seal under demanding conditions. - β€’ **Made in the USA, Trusted Worldwide:** Engineered for professionals who demand quality and efficiency in every bulkhead connection. ## Overview The 3" UNISEAL Flexible Tank Adapter is a premium, injection-molded bulkhead fitting designed for 3" Schedule 40 PVC pipes. Made in the USA from durable TPE rubber, it provides a liquid-tight seal on curved or irregular tank surfaces, resisting acids, oils, grease, gasoline, and sewage. Rated for pressures up to 65 PSI, it simplifies installation by replacing complex multi-part fittings with a single flexible unit, reducing labor and material costs while ensuring long-lasting performance. ## Description Uniseal is simply the world's best seal and installing the Uniseal is a simple process. After cutting a hole in the wall of a tank or other surface, the seal is inserted. Then the pipe is coated with a slippery detergent (i.e. dish soap) and pushed into the seal. Uniseal products replace traditional plumbing hardware with a single injection molded unit requiring no component parts. It was designed to solve many of the issues of pipe to tank connections. For many industries pipe to tank seals are traditionally among the most complex connections to manufacture. Traditional seals require multiple parts such as, rigid flanges, bolts, washers, o-rings, along with long assembly times and high production costs. The Du Pont Alcryn is the key to the liquid-tight seal. When the pipe is pushed through the rubber-like Uniseal from the outside, the inside Alcryn wall becomes thin enough to allow the pipe to squeeze through and then forms a liquid-tight seal. The coefficient of friction with the plastic pipe is roughly three times higher than any other material which allows it to create a better seal than with any other material. In static conditions the seal is good up to 65 PSI. Uniseal can withstand pressure, and suction, acids, oils, greases, gasoline, sewage, waste, heat and cold. It offers long life, easy installation and reduced labor and material costs. ## Features - Versatile Attachment Solution: Uniseals provide a reliable method to attach 3 inch bulkhead fitting pipes to various containers, especially on curved surfaces like storage drums and buckets, where traditional bulkhead fittings might fail. Ideal for 3 inch Schedule 40 PVC pipes. - Solves Issues: Made from long-lasting TPE melt-processable rubber, this seal resists acids, oils, greases, gasoline, and sewage, while withstanding pressure up to 65 psi and extreme temperatures. Designed for 3" ID x 3.5" OD pipes with a 4" hole size, it ensures easy installation and reduced labor costs. - Liquid Tight Seal: UNISEAL is the world's best product. UNISEALS provide more versatility than a traditional bulkhead, handling irregularities and curvatures with ease. - Easy To Install: Longevity, easy installation, and reduced labor and material costs. It is made to withstand pressure and suction as well as oils, greases, sewage, waste, heat and cold. - The Best: To achieve optimal results in straight or curved applications, the UNISEAL is the only choice to meet your sealing needs. Made in the USA. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07218BRW2 | | Best Sellers Rank | #361,770 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #265 in Compression Bulkhead Fittings | | Brand Name | Green Goods | | Color | Black | | Connector Type | Adapter | | Customer Reviews | 4.4 4.4 out of 5 stars (95) | | Item Weight | 0.3 kg | | Manufacturer | The Uniseal Warehouse | | Manufacturer Part Number | U300 | | Material Type | Plastic, Rubber | | Model Number | U300 | | Number of Pieces | 5 | | Set Name | 3 Inch Uniseal Flexible Tank Adapter Bulkhead Fitting Set (5 Pack) | | Size | 3 Inch | | Thread Size | 3 inch | | Thread Type | NPT | | UPC | 637262982661 | | Unit Count | 1 Count | ## Product Details - **Brand:** Green Goods - **Color:** Black - **Connector Type:** Adapter - **Item Weight:** 0.3 kg - **Manufacturer:** The Uniseal Warehouse - **Material:** Plastic, Rubber - **Number of Pieces:** 5 - **Size:** 3 Inch - **Thread Size:** 3 inch - **Thread Type:** NPT ## Images ![3" UNISEAL Flexible Tank Adapter Made in the USA (Bulkhead) - 5 Pack - Image 1](https://m.media-amazon.com/images/I/61NJ8EEBwwL.jpg) ![3" UNISEAL Flexible Tank Adapter Made in the USA (Bulkhead) - 5 Pack - Image 2](https://m.media-amazon.com/images/I/41fYUhTqI1L.jpg) ![3" UNISEAL Flexible Tank Adapter Made in the USA (Bulkhead) - 5 Pack - Image 3](https://m.media-amazon.com/images/I/41uhxogXViS.jpg) ![3" UNISEAL Flexible Tank Adapter Made in the USA (Bulkhead) - 5 Pack - Image 4](https://m.media-amazon.com/images/I/4145Rw-j0qS.jpg) ![3" UNISEAL Flexible Tank Adapter Made in the USA (Bulkhead) - 5 Pack - Image 5](https://m.media-amazon.com/images/I/41a34HLr8tS.jpg) ## Questions & Answers **Q: Think this would work for 3inch rv waste tank drain valve connected with 3inch pvc pipe?** A: Yes, however I would personally go with a bulkhead adapter in that case. Only because these fittings over time will inevitably crack. **Q: On the 3 inch Uniseal, what is the outer diameter of the outer flange?** A: The outside diameter to the 3" Uniseal is 5". **Q: How would this work connecting an inground rubber pond liner to a 275 gal tote also in ground using either a pipe or directly side by side?** A: This would work for the Tote but will not work for the liner. **Q: So I would drill a 4in hole in order to accommodate the uniseall?** A: Yes. You need to drill a 4" hole. I had to use some soapy water to get the uniseal to seat into the 4" hole. ## Frequently Bought Together - 3" UNISEAL Flexible Tank Adapter (Bulkhead) - 5 Pack - 2'' UNISEAL Flexible Tank Adapter (bulkhead) - 6 Pack - 1'' UNISEAL Flexible Tank Adapter (Bulkhead) - 5 Pack --- ## 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.jp/products/45678160-3-uniseal-flexible-tank-adapter-made-in-the-usa-bulkhead](https://www.desertcart.jp/products/45678160-3-uniseal-flexible-tank-adapter-made-in-the-usa-bulkhead) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-10*