SPT 850mm CO2 Sealed Laser Tube (40W)

Retail Price: $195.00
Price: $175.00
30 units available
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This is a quality made CO2 laser tube. CE, FDA certified.



  • Power: Rated 40W (48W peak)
  • Triggering Voltage: 20KV
  • Operating Voltage: 18KV
  • Max Current: 16mA
  • Length: 850mm/33.5 inch
  • Diameter: 50mm/ 2inch
  • Water Cooling: 10L/m
  • Water temperature: 18~24'C (64~74'F).
  • Warranty: 3 months  



Why buy a laser tube from us?

1) We're located in USA (Sacramento, California). No US Custom issue

2) We provide great tech support. We are knowledgeable, and we know what we're selling

3) Fast turn around time for tube replacement

4) Competitive pricing because we deal direct with the manufacturers

5) High quality and great packing


We test each tube with industry grade laser power meter before shipping. We pick the best tube to ship to you.


 (Note: pictures are showing a test for a 60W laser tube)


 Note: 600W water chiller (refrigerant) is highly recommended for cooling.  We recommend LightObject  LO-600 chiller


Shipping: Default shipping method is UPS ground for all laser tube orders.  Please contact us for the price if faster service is needed.


Multiple Item Orders -  please add each item to the cart and then click on the "Shipping Estimator" to get the shipping cost.


Courtesy reminder: Any damage that happens during shipping, the buyer must report to us within 3 business days after receiving it. Failing to do so will result in rejection of all claims. Customers must file a report to the Carrier and keep all shipping materials handy for inspection. The buyer is responsible for the shipping cost of a replacement tube after 30 days of receiving the product.

Average rating 10 out of 10 ( based on 8 reviews )

LightObject made it easy!

Review by Erica Scorsonelli on 1/18/2016

So after a couple of emails and phone calls to LO we bought this tube for our "50 Watt" blue and white eBay laser engraver. Installation was easy and it works great - maybe better that me "50 watt" did when it was new. Thanks for the great product and advice!!!!

realistic ratings

Review by mike ohara on 4/17/2017

so many are selling "50" watt tubes that are MAYBE good for 36W. Here i found a good price on a realistically rated 40W tube that is Max_size for my so-called 50W laser... Thumbs up

Great Tube.

Review by Jim on 10/8/2017

I bought this to replace the "45" watt in a Full Spectrum 12x20 after 2 died in under 300 hours combined. Full Spectrum's tubes by the size are 35 watts. This tube far out-performs the Full Spectrum tube.

SPT 40W 850mm

Review by Matt Herriot on 4/12/2018

LO billing was prompt and correct. Tube shipped rapidly and arrived quickly. Worked great. Will buy from LO again.

Great product

Review by Tim on 9/20/2018

So far the tube has exceeded my expectations.

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