---
product_id: 52651645
title: "Uniseal 4' Flexible Tank Adapter (bulkhead)"
brand: "the uniseal warehouse"
price: "€ 52.82"
currency: EUR
in_stock: true
url: https://www.desertcart.sk/products/52651645-uniseal-4-flexible-tank-adapter-bulkhead
store_origin: SK
region: Slovakia
---

# Fits 4.5" OD pipe precisely 5" holesaw size for easy installation Made in USA quality Uniseal 4' Flexible Tank Adapter (bulkhead)

**Brand:** the uniseal warehouse
**Price:** € 52.82
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the deal with precision and durability!

## Quick Answers

- **What is this?** Uniseal 4' Flexible Tank Adapter (bulkhead) by the uniseal warehouse
- **How much does it cost?** € 52.82 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/52651645-uniseal-4-flexible-tank-adapter-bulkhead)

## Best For

- the uniseal warehouse enthusiasts

## Why This Product

- Trusted the uniseal warehouse brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Optimized Hole Size:** Designed for a 5" holesaw cut, making installation quick and hassle-free.
- • **Proudly Made in the USA:** Manufactured domestically to guarantee top-tier quality and reliability.
- • **Precision Fit for 4" Pipes:** Engineered for a snug 4.5" OD pipe connection, ensuring leak-proof performance.
- • **Premium Sarlink 4165 Material:** Crafted from high-grade Sarlink for long-lasting flexibility and strength.
- • **Durable Wall Thickness Compatibility:** Supports pipe walls from 3/16" to 3/8", perfect for versatile tank setups.

## Overview

The Uniseal 4' Flexible Tank Adapter is a high-quality bulkhead fitting made in the USA, designed to fit 4" pipes with a 4.5" outer diameter. It requires a 5" holesaw for installation and supports pipe wall thicknesses between 3/16" and 3/8". Constructed from durable Sarlink 4165 material, this adapter ensures a flexible, leak-proof seal for your tank systems.

## Description

4'' UNISEAL Flexible Tank Adapter (bulkhead) This 4'' Uniseal is for 4'' Pipe with an OD of 4.500''.  The hole saw size is 5.00''. For 3/8'' Through 3/16'' Wall Thickness Only.

## Features

- Made in the USA
- Pipe OD - 4.5" (114mm)
- Holesaw size: 5" (127mm)
- Up to 3/8" Wall Thickness.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Uniseal |
| Part Number | FBA_U400 |
| Product Dimensions | 14.53 x 14.53 x 1.83 cm; 90.72 g |
| Item model number | FBA_U400 |
| Size | 127 mm |
| Colour | Black |
| Material | Sarlink 4165 |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 90.7 g |

## Product Details

- **Size:** 127 mm
- **Material:** Sarlink 4165
- **Brand:** The Uniseal Warehouse
- **Color:** Black
- **Item dimensions L x W x H:** 5.72 x 5.72 x 0.72 inches
- **Connector Type:** Adapter
- **Thread Size:** 4 inch
- **Number of Pieces:** 1
- **Manufacturer:** The Uniseal Warehouse
- **UPC:** 799475705816

## Images

![Uniseal 4' Flexible Tank Adapter (bulkhead) - Image 1](https://m.media-amazon.com/images/I/61j-nctOE8L.jpg)
![Uniseal 4' Flexible Tank Adapter (bulkhead) - Image 2](https://m.media-amazon.com/images/I/61uY-OCjhXL.jpg)
![Uniseal 4' Flexible Tank Adapter (bulkhead) - Image 3](https://m.media-amazon.com/images/I/71m82QWcBcL.jpg)
![Uniseal 4' Flexible Tank Adapter (bulkhead) - Image 4](https://m.media-amazon.com/images/I/71a6nAeIW7S.jpg)
![Uniseal 4' Flexible Tank Adapter (bulkhead) - Image 5](https://m.media-amazon.com/images/I/71-NQIgtopS.jpg)

## Questions & Answers

**Q: Is this designed for a pipe with a 4.5" od, or a 4" od?**
A: It made to fit SCH 40 PVC Pipe which has an OD of 4.5" and an ID of 4". PVC pipe is sold by its inside dimension. Uniseals are labeled for the size pipe they fit. In this case 4" pvc.

**Q: What material is the seal made of? is it polyethylene or polypropylene and does it meet fda guidelines for potable water?**
A: It is made from Alcryn 2070.

**Q: Will this work with 4" sewer pipe?  it has an od of 4.2" instead of the 4.5" od of schedule 40.**
A: 4.2 = approximately 4.016" there is slight gap

4.5=approximately 4.0375"

see if there is a bell reducer. or a flex coupling

**Q: hola, de cuantas pulgadas o milimetros tiene que ser el hueco en el tanque ?**
A: El hueco para el uneseal tiene que ser del tamaño de la parte gruesa

## Frequently Bought Together

- 4'' 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
- 3'' UNISEAL Flexible Tank Adapter (bulkhead)

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**Shop now:** [https://www.desertcart.sk/products/52651645-uniseal-4-flexible-tank-adapter-bulkhead](https://www.desertcart.sk/products/52651645-uniseal-4-flexible-tank-adapter-bulkhead)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-11*