---
product_id: 36634184
title: "4\" SDR-35 Uniseal (R) Pipe-to-Tank Seal"
brand: "the uniseal warehouse"
price: "VT743"
currency: VUV
in_stock: false
reviews_count: 6
url: https://www.desertcart.vu/products/36634184-4-sdr-35-uniseal-r-pipe-to-tank-seal
store_origin: VU
region: Vanuatu
---

# 4.290" Pipe OD precision 5" Holesaw size fit Made in USA quality 4" SDR-35 Uniseal (R) Pipe-to-Tank Seal

**Brand:** the uniseal warehouse
**Price:** VT743
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Seal it tight, seal it right — the pro’s choice for flawless pipe-to-tank connections!

## Quick Answers

- **What is this?** 4" SDR-35 Uniseal (R) Pipe-to-Tank Seal by the uniseal warehouse
- **How much does it cost?** VT743 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/36634184-4-sdr-35-uniseal-r-pipe-to-tank-seal)

## 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

- • **Proudly Made in the USA:** Support local manufacturing with a product crafted to the highest standards.
- • **Durable Sarlink TPV Material:** Built to last with high-grade Sarlink TPV 3460, resisting wear and environmental stress.
- • **Precision Fit for SDR-35 Pipes:** Engineered for a snug 4.290" pipe outside diameter, ensuring leak-proof connections.
- • **Versatile Bulkhead Alternative:** Perfect for curved surfaces like drums and buckets where traditional bulkheads fail.
- • **Easy Installation with Standard Tools:** Designed for a 5" holesaw size, making setup straightforward for pros and DIYers alike.

## Overview

The 4" SDR-35 Uniseal® Pipe-to-Tank Seal is a precision-engineered, durable sealing solution designed for 4.290" OD pipes with up to 3/8" wall thickness. Made from high-quality Sarlink TPV 3460 in the USA, it fits a 5" holesaw cut and excels where bulkheads can’t, especially on curved surfaces like storage drums and buckets. Ideal for professionals seeking reliable, leak-proof pipe-to-container seals.

## Description

DOES NOT FIT SCH 40 PVC PIPE. Check the Outside Diameter (OD) of your pipe. UNISEAL 4" x SDR35 Uniseals are used to attach pipe to just about any container in situation where bulkheads will not work. The most common use is on curved surfaces such as storage drums, buckets, and even other pipe. 4" x SDR35 Uniseal Specs: Pipe ID - 4" (101mm) Pipe OD - 4.290" (109mm) Holesaw size: 5" (127mm) Up to 3/8" Wall Thickness. Made in the USA

Review: Excellent! - I bought to use on 4" PVC Sch 40 I bought at HD. It is very difficult to get over the outside of the pipe since the walls are so thick. It takes two people and two screwdrivers but it is doable. I guess you want it tight anyhow for a nice tight seal. Worked great! Outside dimension of seal is 6 inches which was very beneficial when I bored a 6" hole in my concrete floor. I used this uniseal to seal the bottom of the hole for a radon removal system install. The seal prevented concrete from falling down the hole. Excellent!
Review: Impossible to use without an adapter - I purchased this to create a seal for a 4" PVC pipe. Unfortunately, this is the exact same size as the 4" PVC pipe. The only 4" PVC that will fit inside this is a "street coupling" (spigot x spigot) which costs an extra $20 pushing the total cost to use this up to $40ish with shipping costs since I couldn't find that kind of connection in stores. Alternatively, I found that I can use a 4" to 3" adapter (not PVC though. it's the thinner storm water pipes) and that the 3" side will fit inside this while the 4" side will fit inside a 4" PVC pipe, but the fit isn't as snug as I would like and creates a bottleneck where pressure would build. A brushing that is spigot x slip might also work, but those tend to be reducing so I'd have to have increased the size of the pipe than reduced it again with multiple fittings at a higher cost. It's still cheaper than a 4" bulkhead fitting, so that is the only reason why I didn't deduct more stars. Still, something designed to fit a 4" PVC pipe should clearly say that it doesn't. I will update this review with pictures of how it connects with the fittings once I get them in.

## Features

- Pipe OD - 4.290" (109mm)
- Holesaw size: 5" (127mm)
- Up to 3/8" Wall Thickness. (9mm)
- Made in the USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00T69X44K |
| Brand | The Uniseal Warehouse |
| Brand Name | The Uniseal Warehouse |
| Color | Black |
| Customer Reviews | 4.4 out of 5 stars 31 Reviews |
| Item Dimensions L x W | 4"L x 4.29"W |
| Item Length | 4.29 Inches |
| Item Weight | 0.01 Ounces |
| Manufacturer | The Uniseal Warehouse |
| Material | Sarlink TPV 3460 |
| Material Type | Sarlink TPV 3460 |
| Nominal Wall Thickness | 0.66 mm |
| Product Dimensions | 4"L x 4.29"W |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** The Uniseal Warehouse
- **Color:** Black
- **Item Length:** 4.29 Inches
- **Item Weight:** 0.01 Ounces
- **Manufacturer:** The Uniseal Warehouse
- **Material:** Sarlink TPV 3460
- **Nominal Wall Thickness:** 0.66 mm
- **Product Dimensions:** 4"L x 4.29"W

## Images

![4" SDR-35 Uniseal (R) Pipe-to-Tank Seal - Image 1](https://m.media-amazon.com/images/I/51HFXNQay9L.jpg)
![4" SDR-35 Uniseal (R) Pipe-to-Tank Seal - Image 2](https://m.media-amazon.com/images/I/61qoVekUoML.jpg)
![4" SDR-35 Uniseal (R) Pipe-to-Tank Seal - Image 3](https://m.media-amazon.com/images/I/61u8lVpQfhL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent!
*by M***H on May 5, 2020*

I bought to use on 4" PVC Sch 40 I bought at HD. It is very difficult to get over the outside of the pipe since the walls are so thick. It takes two people and two screwdrivers but it is doable. I guess you want it tight anyhow for a nice tight seal. Worked great! Outside dimension of seal is 6 inches which was very beneficial when I bored a 6" hole in my concrete floor. I used this uniseal to seal the bottom of the hole for a radon removal system install. The seal prevented concrete from falling down the hole. Excellent!

### ⭐⭐⭐⭐ Impossible to use without an adapter
*by E***E on August 25, 2020*

I purchased this to create a seal for a 4" PVC pipe. Unfortunately, this is the exact same size as the 4" PVC pipe. The only 4" PVC that will fit inside this is a "street coupling" (spigot x spigot) which costs an extra $20 pushing the total cost to use this up to $40ish with shipping costs since I couldn't find that kind of connection in stores. Alternatively, I found that I can use a 4" to 3" adapter (not PVC though. it's the thinner storm water pipes) and that the 3" side will fit inside this while the 4" side will fit inside a 4" PVC pipe, but the fit isn't as snug as I would like and creates a bottleneck where pressure would build. A brushing that is spigot x slip might also work, but those tend to be reducing so I'd have to have increased the size of the pipe than reduced it again with multiple fittings at a higher cost. It's still cheaper than a 4" bulkhead fitting, so that is the only reason why I didn't deduct more stars. Still, something designed to fit a 4" PVC pipe should clearly say that it doesn't. I will update this review with pictures of how it connects with the fittings once I get them in.

### ⭐⭐⭐⭐⭐ Fit and worked perfectly.
*by M***C on April 16, 2023*

Glad I noticed that there is a different ring for 4" Schedule 40 and 4" Sewer pipe. I was using Sewer Pipe and this worked like a dream. They have been in for a month so far with no leaks.

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-08*