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MERET® oxygen cylinders are manufactured in the USA to meet or exceed DOT 3AL and TC 3ALM requirements. Cylinders are constructed from lightweight, high-strength aluminum 60610T6 alloy, have a clear powder coat protective finish, and green neck to indicate oxygen. Cylinders have a 0.750-16 UNF-2B thread size and are shipped standard with a CGA870 post valve or optional CGA870 toggle valve for easy operation. M6 cylinders are designed with a 5 year hydrostatic test capacity and a filling pressure of 2216 PSI. The M6 cylinder has an O2 capacity of 5.7 cu ft (161 L), and measures 11.8” x 3.19” without the valve. All cylinders are shipped empty and do not include the MERET logo.  Please contact MERET® for 6-pack or larger pallet quantities.


  • Manufactured in USA
  • DOT 3AL and TC 3ALM approved
  • Clear powder coat protective finish
  • Green neck
  • Includes CGA870 post or optional toggle valve

Product Dimensions: 14.8” x 3.19” 3.19” (with CGA870 post valve)
Product Weight: 3 lbs 5 oz (with CGA870 post valve)

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California’s Proposition 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov