Do they hold anykind of pressure?

Some - haven’t tested it, but if you’re using it in the wall of anything that’s not metal (e.g. plastic drum, 5gal bucket) it certainly will be sufficient. The vessel would fail first. It will hold 20’ water head pressure no problem.

I want to use them in a solar evacurated vacuum tube system. ?Will outdoor weather, sun, or hot water destroy them?

I'm using them in outdoor fish tanks - in the sun. They seem immune, so far, after 3-1/2 years. They are vulcanized rubber, like tires. You know how long it takes a tire to dry rot in the sun? Consider these the same, I think. They're really great.. Keep in mind, in your design, that they can only go through in one direction. I suggest you use a short piece, right at the uniseal, and connect it with a flexible hose coupler, to any longer piece. That's how I use them. Otherwise, dismantling a/o moving can be a big hassle, or you'll have to cut the pipes that go through the uniseal before you can dismantle yoru system.

will it function if the tank wall thickness is 1/2"?

Thicker the better, really thin plastic makes it harder to work

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2'' UNISEAL Flexible Tank Adapter Made in the USA (Bulkhead) - 5 Pack

2'' UNISEAL Flexible Tank Adapter Made in the USA (Bulkhead) - 5 Pack

Product ID: 6074118

Details

Brand
Green Goods
Color
Black
Connector Type
Adapter
Item Weight
0.27 g
Item dimensions L x W x H
4 x 4 x 0.75
Material
Sarlink 4165

⏱️Installs in minutes

🛢️Fits tanks up to 3/8” wall thickness

🇺🇸Made in USA quality

180.42 DT

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Description

🔧 Seal smarter, install faster, and never leak later!

BULK VALUE PACK - Five flexible tank adapters in one set—ideal for professionals who demand reliability and efficiency.
EFFORTLESS INSTALLATION - Cut, insert, and seal in minutes—no tools or extra parts needed.
VERSATILE COMPATIBILITY - Designed to fit tanks with walls up to 3/8” thick, perfect for diverse industrial needs.
UNMATCHED SEAL INTEGRITY - Du Pont Alcryn material creates a liquid-tight seal up to 65 PSI, outperforming traditional fittings.
DURABILITY MEETS CHEMICAL RESISTANCE - Resists acids, oils, gasoline, sewage, heat, and cold for long-lasting performance.

The 2'' UNISEAL Flexible Tank Adapter is a premium, USA-made bulkhead fitting engineered for quick, tool-free installation and superior liquid-tight sealing up to 65 PSI. Crafted from durable Sarlink 4165 with Du Pont Alcryn technology, it fits tanks up to 3/8” wall thickness and withstands harsh chemicals and temperature extremes, making it the go-to solution for professionals seeking reliable, cost-effective plumbing connections.

Specifications

ASIN	B00FAF3NLS
Best Sellers Rank	#204,166 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #177 in Compression Bulkhead Fittings
Brand Name	Green Goods
Color	Black
Connector Type	Adapter
Customer Reviews	4.7 4.7 out of 5 stars (513)
Item Dimensions	4 x 4 x 0.75 inches
Item Weight	0.27 g
Manufacturer	The Uniseal Warehouse
Manufacturer Part Number	U200
Material Type	Sarlink 4165
Model Number	U200
Number of Pieces	5
Set Name	Uniseal Flexible Tank Adapter Set (5 Piece)
Size	2 Inch
Thread Size	2 inch
Thread Type	UNF
UPC	799475705786
Unit Count	5 Count

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180.42 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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