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Read our Technical Guide about Gas Struts:
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columbiastruts@gmail.com

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Columbia Struts, Inc.

We like to call gas springs "struts".

Technically they are pneumatic lift assists. The term Gas Struts can imply flammable gas. Actually they are filled with nitrogen which is inert and in the air we breathe. Nitrogen does not mix well with moisture which is an advantage for gas strut use. There is also a measured amount of hydraulic oil to keep the seal from drying out and provide damping at the end of the stroke.

Diagram of a Columbia Strut Gas Strut