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High Pressure Gas Filled Disposable Cylinders

1.0cc to 1000cc INTERNAL CAPACITY
Approved and in service gas cylinder products meeting
MIL-PRF-25369, MIL-C-601G, AS601, MIL-C-16385, MIL-C-52053,
USCG/UL1191, DOT 39, ASTM, FAA/TSO C13, cGMP and USP requirements.

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"Leland's management is committed to empower all employees to be able to produce and deliver products and services which meet and exceed customer expectations through a process of continual Quality Management System (QMS) improvement."

Table 1: Quick Reference Guide: SIZING BY CYLINDER DIAMETERTable 1

Table 2: Sealing Cap Guide: TYPE AND ENERGY NEEDED
table 2

*Per requirements of UL1191. A Newton of force (Nf) can be converted to pounds of force by multiplying by 0.2248.
The UL1191 test method is a very good indicator of the force needed to puncture a cap and the total energy requirement. You can obtain the UL document by contacting UL directly: CustomerService.RTP@us.ul.com

Diagram 1

Explanation 1

These are examples of some sealing caps, which are available to close off the endof a gas filled cylinder. We offer technical support to assist you in the proper selection of these options.

Diagram 2

Explanation 2

This cylinder is fitted with an innovative break off tip (BOT) sealing cap. Applications requiring low work energy to release the gas can benefit from our technology. It is not for everyone though, as special care and handling is required due to the sensitive nature of this gas release mechanism.


Leland is about gas technologies. The ability to put gases into unique disposable cylinders safely and effectively is our goal. Most of our cylinders are mass produced at rates as high as 40 finished units per minute. It takes planning and a commitment to the specialized equipment necessary to make these cylinders. Here are seven examples of our cylinder range.

1. This Nitrogen filled cylinder is charged to 2700 psi and welded closed for zero leakage. The 1⁄2-20UNF2A threaded neck and 100 hour rated Leland SuperZinc coating make it common in many applications.
2. A crimp closure is common to lock in the gas when it has oxidizer properties, such as Oxygen and Nitrous Oxide. Your application requirements may necessitate this type of closure. Please contact us so we can help you decide what type of closure is right for you.
3. The indentation in this cap was a military design to prevent the puncture pin in the inflation assembly from touching the cap surface prematurely during high g takeoffs and landings by fighter pilots. We can design specialized puncture caps to accommodate virtually any situation. All tools are produced in house.
4. Ever wonder what a side curtain airbag cylinder looks like? This cylinder is custom made for a top auto maker. We have DOT approval for Ultra High Pressure (UHP) cylinders with filling pressures of over 6,000 psi.
5. A 98cc internal (water) capacity cylinder is about as large as you can go before the need to seek a DOT approval. This distinction is important to applications that require normal UPS style shipping without costly hazardous materials fees. The Leland web site has more specific information about safety and shipping.
6. We regularly make disposables with an internal capacity of 1000cc. When filled with CO2, that translates to a gas mass of 670g. All our cylinder products over 110cc are DOT approved as NRC containers. We have tooling for several common diameters and welcome custom requests.
7. “Small as a pencil eraser” was our vision in 2001 to accommodate the needs of the medical industry for drug delivery devices. These are very strong little cylinders with <1.5cc of water capacity. We often fill them with liquid CO2 or N2 to pressures of up to 2750 psi.

For more cylinder options please see side menu
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Table 3: Quick Reference Guide: GASES, GRADES AND RELATIONSHIPSTable 3a
Table 3b
This table is a reference guide to help you think about the type of gas you may require. We offer virtually any gas or blend there is; but generally, not toxic gases, as we place the safety of our employees (and you) as a high priority. Please contact us for detailed information about a specific cylinder, as there are many factors that affect the quantity and pressure of the stored gas in our cylinders.

Piercing Pins and Unique Cylinder Attachments

Diagram 3

Puncture Pin Explanation

Diagram 4
The shape and style of a puncture pin relates to its intended use. Diagram 3 shows a typical life jacket style pin where the user will advance the pin into the puncture cap. Diagram 4 shows what a puncture pin should look like if the cylinder is advanced onto the pin. A seal is required in both situations to prevent gas leakage.

Diagram 5

Cylinder Attachment

Diagram 6
The most common method to attach the cylinder is by means of a thread. The advancing cylinder strikes the puncture pin shown in diagram 6. Another method used in the life jacket industry is a bayonet fitting attached to the threaded end. Bayonets allow quick and positive engagement as shown in diagram 5. The ergonomics of your product will be important design input criteria for the cylinder and how the user is expected to replace it.

For more cylinder options please see side menu
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Table 4: Quick Reference Guide: 1.0cc to 1000cc INTERNAL CAPACITY

If your requirements are outside of the range of product possibilities shown here,
please take a moment to contact us. Our Tech Team will be happy to assist you.

For more cylinder options please see side menu
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 Rev 14.0
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