---
product_id: 6074119
title: "3'' UNISEAL Flexible Tank Adapter Made in the USA (bulkhead)"
brand: "green goods"
price: "79.88 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Green Goods"
url: https://www.desertcart.tn/products/6074119-3-uniseal-flexible-tank-adapter-made-in-the-usa-bulkhead
store_origin: TN
region: Tunisia
---

# Fits 3" Schedule 40 PVC pipes Durable TPE Alcryn rubber 65 PSI pressure rating 3'' UNISEAL Flexible Tank Adapter Made in the USA (bulkhead)

**Brand:** green goods
**Price:** 79.88 DT
**Availability:** ✅ In Stock

## Summary

> 🔩 Seal smarter, not harder — the ultimate flexible tank adapter for pros.

## Quick Answers

- **What is this?** 3'' UNISEAL Flexible Tank Adapter Made in the USA (bulkhead) by green goods
- **How much does it cost?** 79.88 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/6074119-3-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

- • **Unmatched Versatility:** Seals perfectly on curved or irregular surfaces where traditional fittings fail.
- • **Effortless Installation:** Slip-on design cuts labor time and costs with no extra parts needed.
- • **Liquid-Tight Confidence:** Creates a superior seal with 3x friction coefficient for leak-proof performance up to 65 PSI.
- • **Proudly Made in the USA:** Quality you can trust, supporting local manufacturing and standards.
- • **Industrial-Grade Durability:** Resists acids, oils, greases, gasoline, sewage, heat, and cold for long-lasting use.

## Overview

The 3" UNISEAL Flexible Tank Adapter is a premium, injection-molded bulkhead fitting designed for 3" Schedule 40 PVC pipes. Made from durable Alcryn TPE rubber, it provides a liquid-tight seal on curved or irregular tank surfaces, resisting harsh chemicals and pressures up to 65 PSI. Its simple slip-on installation eliminates the need for multiple parts, reducing labor and material costs. Manufactured in the USA, it’s trusted by professionals for reliable, 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.

Review: works great - Very pliable rubber and no leaks on my bog filter.
Review: It works great - I love these products

## 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 | B00BR5RYXS |
| Best Sellers Rank | #61,118 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #57 in Compression Bulkhead Fittings |
| Brand | Green Goods |
| Brand Name | Green Goods |
| Color | Black |
| Connector Type | Adapter |
| Customer Reviews | 4.7 out of 5 stars 234 Reviews |
| Item Dimensions | 4.69 x 4.69 x 0.72 inches |
| Item Weight | 0.15 Pounds |
| Item dimensions L x W x H | 4.69 x 4.69 x 0.72 inches |
| Manufacturer | The Uniseal Warehouse |
| Manufacturer Part Number | U300 |
| Material | Alcryn |
| Material Type | Alcryn |
| Model Number | U300 |
| Number of Pieces | 1 |
| Size | 3 inches |
| Thread Size | 3 inch |
| Thread Type | UN |
| UPC | 799475705793 |
| Unit Count | 1.0 Count |

## Product Details

- **Size:** 3 inches
- **Material:** Alcryn
- **Brand:** Green Goods
- **Color:** Black
- **Item dimensions L x W x H:** 4.69 x 4.69 x 0.72 inches
- **Connector Type:** Adapter
- **Thread Size:** 3 inch
- **Thread Type:** UN
- **Item Weight:** 0.15 Pounds
- **Number of Pieces:** 1

## Images

![3'' UNISEAL Flexible Tank Adapter Made in the USA (bulkhead) - Image 1](https://m.media-amazon.com/images/I/6131G8MRNCS.jpg)

## Questions & Answers

**Q: What size hole saw should be used for a 3" Uniseal?**
A: 4" hole saw.  The link below has a chart for the various sizes.

http://www.unisealshop.com/page.cfm?page=3

**Q: What temperature can this withstand, I am considering this for an automotive application and was wondering if it can handle engine bay heat**
A: I used this product for pond plumbing. I don't think this can handle the amount of heat.

**Q: Will this work on a 55 gallon plastic drum? (Round side?)  Thanks**
A: Yes. It works well when executed correctly.. I have one in a huge tank twenty feet in the air. It has set for seven years and not leaked a drop. It has a four foot hole, and holds 3,000 gallions. Wish that this helps. Uniseal..

**Q: What pipe would work with this? a 3-inch pvc pipe has a outside diameter of greater than 3 in and is far bigger than the hole in the uniseal**
A: Uniseals are labeled for the size pipe they work with,  This uniseal is designed to work with 3" SCH 40 PVC pipe.

## Customer Reviews

### ⭐⭐⭐⭐⭐ works great
*by A***D on September 4, 2025*

Very pliable rubber and no leaks on my bog filter.

### ⭐⭐⭐⭐⭐ It works great
*by S***E on July 21, 2025*

I love these products

### ⭐⭐⭐⭐⭐ no leaks
*by J***D on March 13, 2025*

couple years on a pond waterfall pipe connected to the side of a plastic pond tub you buy at hardware store. added flex seal for good measure. no leaks yet.

## Frequently Bought Together

- 3'' UNISEAL Flexible Tank Adapter (bulkhead)
- 2" Uniseal Flexible Tank Adapter - Perfect for Attaching 2-inch pipe to Curved Surfaces, Storage Drums, Buckets, and More - Ideal for Situations Where Bulkheads Fail - 2 Pack
- 1 1/2" UNISEAL Flexible Tank Adapter (Bulkhead) - 2 Pack

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**Shop now:** [https://www.desertcart.tn/products/6074119-3-uniseal-flexible-tank-adapter-made-in-the-usa-bulkhead](https://www.desertcart.tn/products/6074119-3-uniseal-flexible-tank-adapter-made-in-the-usa-bulkhead)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-25*