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Kast-O-Lite 30 LI Plus Castable - Bag

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Rated at 3000 °F (beyond steel welding heat). A lightweight, high alumina insulating castable with a hydraulic set.  It can be used on its own, or as a layer over top of wool (best to toughen up the wool first with our freeze proof rigidizer to prevent its compression during application), etc. 


  • Kast-O-Lite 30 LI Plus does not have the density and burner durability of MIZZOU, but it is lighter and offers superior insulation.
  • This keeps your forge walls cooler on the outside, and warmer inside.

Typical Applications:

  • aluminum furnace stacks
  • aluminum holding furnace doors
  • furnace discharge doors
  • air heaters
  • hot face or back up linings
  • petrochemical heaters

Sizes Available:

  • 1 Gallon Pails = 1/6 of a full bag.
  • 2 Gallon Pails = 1/3 Bag.   
  • 55 lb Bags.


Once cured, Kast-O-Lite can be coated with ITC 100 HT to optimize forge efficiency, or with ITC-296A for improved flux resistance.


Do you have more than 1 bag of Castable Refractory in your cart?

If so, the online shipping quotes will probably be wrong!!  The automated shipping algorithm has a hard time calculating for that weight/dimension. In turn the quotes come in WAY TOO HIGH. Please contact us for a manual quote - it will usually be much better!!

HOW? Just abandon your cart with your proper shipping address, and then contact us with either:

  • Email: support@canadianforge.com
  • Call: 1-888-470-0010
  • Text: 587-401-2288

Include your name and request 'better shipping'. We'll have all your info to get some shipping options quickly.


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