Does it include degassing tool, goes on threaded end and lets you release the air inside slowly?

my cylinder came with a brass cap-end, not a degassing type brass cap!

Where do i get seals for this tube.

The seals are just ordinary Buna-N or if you prefer oil resistant; Viton seals. You can buy them from your local hardware stores.

How do I install this extra air cylinder

This is the same air cylinder as the one that came with the Hatsan BullBoss. You simply unscrew the original cylinder and screw this one on. It makes carrying extra air capacity very easy. You can have a full cylinder on hand to replace the one on the rifle when it gets too low on pressure (in the red zone). The extra cylinder can be filled off the rifle to its max and kept in reserve.

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Hatsan AT44 Long/BullBoss Fill Cylinder - 230cc, (H) Class, Black

Product ID: 69072108

Details

Brand
Hatsan
Item dimensions L x W x H
24 x 2 x 2
Lock Type
Key Lock
Material
Alloy Steel
Special Feature
Built-in Valve

⛽200BAR (2900PSI) max fill pressure

🔧Built-in valve for seamless control

⚙️230cc high-capacity volume

$288.39

Duties & taxes included

In stock

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Description

⚡ Power your precision. Own the range.

PROTECTIVE CAP INCLUDED - Keep your cylinder safe and pristine with the included protective cap, perfect for on-the-go professionals.
HIGH PRESSURE RESILIENCE - Rated for 200BAR (2900 PSI) fill pressure, delivering reliable power and durability under intense conditions.
BUILT IN VALVE TECHNOLOGY - Integrated valve system streamlines refilling and pressure regulation for hassle-free maintenance.
ROBUST 230 CC AIR CAPACITY - Maximize your shooting sessions with an ample 230cc volume for extended air supply.
PRECISION FIT FOR HATSAN AT 44 - Engineered exclusively for the AT44 Long series, ensuring flawless compatibility and peak performance.

The AT44 Long/BullBoss Fill Cylinder is a premium 230cc air cylinder designed specifically for Hatsan AT44 Long series PCP airguns. Featuring a built-in valve and rated for a high fill pressure of 200BAR (2900 PSI), it ensures reliable, extended shooting performance. Finished in sleek black alloy steel and equipped with a protective cap, this cylinder combines durability with professional-grade functionality for serious airgun enthusiasts.

Specifications

ASIN	B07CQ8LQZG
Additional Features	Built-in Valve
Best Sellers Rank	#340,501 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #34 in Air Gun Tools
Brand Name	Hatsan
Color	Black
Control Method	Touch
Customer Reviews	4.4 4.4 out of 5 stars (85)
Finish Types	Brushed
Global Trade Identification Number	00817461013896
Included Components	Cylinder
Item Dimensions	24 x 2 x 2 inches
Item Type Name	Air Cylinder
Lock Type	Key Lock
Manufacturer	Hatsan
Manufacturer Part Number	HA90250
Manufacturer Warranty Description	90-Day Limited
Material Type	Alloy Steel
Model Name	AT44 Fill Cyl
Model Number	HA90250
Number of Pieces	1
Recommended Uses For Product	Air gun maintenance and refilling
Shape	Cylindrical
Style Name	Modern
UPC	817461013896
Unit Count	1.0 Count

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