skip to navigation

Aluminum cylinder serial numbers and markings

Luxfer Gas Cylinders markings

1st Row

Mark and explanation

  • TC or CTC = Transport Canada
  • 3ALM = Aluminum specification (Canada)
  • 124 = Service pressure (bar)
  • T11.3KG = Tare weight (Kilograms)

2nd Row

Mark and explanation

  • DOT = US Department of Transportation
  • 3AL = Aluminum specification (USA)
  • 1800 = Service pressure (psi)
  • U372530 = Serial number
  • Luxfer or M#### = Manufacturing plant identifier

3rd Row

Mark and explanation

  • 01 = Month of manufacture
  • A = Mark of independent inspector
  • 98 = Year of manufacture
  • 20#CO2 = CO2 capacity
  • TW24.9 = Tare wight (lbs)

Stamping layouts have changed slightly over the years. If in doubt, please contact customer service.


Sign up

We’ll send you interesting news, events and stories. Just drop us your email below.

Follow us on

Request information

Please fill in this form to contact us for sales, support or general inquiries. Thank you.







We respect your information and will never sell or pass on your email to 3rd parties. Please read our privacy policy.