Will this fit a 1/2" od (pvc) pipe?

In the US, PVC pipe is sold by it's inside diameter (id). Uniseals are size to the pipe they fit. So these fit 1/2" PVC pipe. If your pipe has an outside diameter (od) of 1/2" these will not fit.

Can this be used on a diesel fuel tank?

No. That would be very dangerous as they are not perfect mechanical seals and definitely not rated for fuel containers. You need solid bulkhead connectors of the appropriate size for your tank.

How close can you put your hole to the bottom of container with 1/2" Uniseal to allow for the most complete draining?

That is a difficult question. As every container has a slightly different shape. The main sealing feature of these is the compression of the seal between the drilled hole and the PVC being pushed through the seal. You could probably get as close as an 1.5 " from the bottom to the center of your hole. I would use your best judgement once you receive it and see where you want to install it on your container.

What size hole saw is required for using the 1/2" and 1" Uniseals?

Hello, For the 1/2" Uniseal you will use a 1.25 hole saw and for the 1" Uniseal you will use 1.75 hole saw. Hope this is helpful to you.

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1/2" UNISEAL Flexible Tank Adapter Made in the USA (Bulkhead) - 2 Pack

1/2" UNISEAL Flexible Tank Adapter Made in the USA (Bulkhead) - 2 Pack

Product ID: 44110431

Details

Size
1/2 inch
Material
Rubber
Brand
Green Goods
Color
Black
Connector Type
Flange
Thread Size
1 inch

📏1/2'' Pipe ID precision fit

🛠️1 1/4'' Holesaw size for easy installation

🇺🇸Made in the USA quality assurance

R476

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Description

🔧 Seal smarter, not harder — the ultimate tank adapter for pros who demand perfection!

UNIVERSAL COMPATIBILITY - Fits pipes with 1/2'' ID and walls up to 3/8'' thick for versatile applications
TRUSTED BY PROFESSIONALS - Top-rated with 4.6 stars and praised for durability and perfect fit
EFFORTLESS LEAK PROOF SEAL - Push-to-fit design eliminates complex hardware and prevents leaks up to 65 PSI
QUICK CLEAN INSTALLATION - Single-piece injection molded unit reduces labor and material costs dramatically
DURABLE CHEMICAL RESISTANCE - Resists acids, oils, gasoline, and extreme temperatures for long-lasting performance

The 1/2" UNISEAL Flexible Tank Adapter is a high-performance, injection-molded rubber seal designed for quick, leak-proof pipe-to-tank connections. Made in the USA, it fits 1/2" pipes with up to 3/8" wall thickness and installs easily with a 1 1/4" holesaw cut. Resistant to chemicals, pressure up to 65 PSI, and extreme conditions, it replaces complex traditional fittings with a durable, single-piece solution favored by professionals.

Specifications

ASIN	B072MPV222
Best Sellers Rank	#51,365 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #30 in Compression Bulkhead Fittings
Brand	Green Goods
Brand Name	Green Goods
Color	Black
Connector Type	Flange
Customer Reviews	4.6 out of 5 stars 382 Reviews
Item Weight	0.11 kg
Manufacturer	Uniseal
Manufacturer Part Number	U050
Material	Rubber
Material Type	Rubber
Model Number	U050
Number of Packs	2
Number of Pieces	2
Set Name	2
Size	1/2 inch
Thread Size	1 inch
Thread Type	NPT
UPC	637262982593
Unit Count	2 Count

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TrustScore 4.5 | 7,300+ reviews

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R476

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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