Our physical shop will be closed for Monday August 2nd and back up Tuesday. Happy Long Weekend!


Your Cart is Empty

Sairset 3000 Refractory Mortar

5 items left

Sairset 3000 is a wet, high-strength, air-setting fireclay refractory mortar that is rated to 3000 °F.


  • Ideal troweling characteristics for mortar joints in brick linings
  • Can be field-adjusted to dipping consistency with the addition of water.

Common Applications:

  • Laying high-duty, super-duty, high-fired super-duty, and 50% alumina firebrick.
  • Used as a brick joint mortar, repairing cracks/joints in boilers, industrial furnaces, kilns, flues, and stacks.
  • Ideal as a general-purpose refractory mortar.

Application Methods:

  • Ready to use/apply as is, or can be mixed with water to thin it out.
  • Some will opt to take a shallow container and mix a little water with it and then dip the bricks in to get a thin, even coating on contact surfaces before stacking.

To Note:

  • Only apply evenly to the contact surfaces of your forge rated brick, not the wall.
  • Only apply a thin layer up to 1/16'' of depth max. It has a thinner consistency, not thick like regular mortar.
  • Sairset 3000 can also be used to seal up cracks.


Since this is an air-set mortar (does not require heat to set). If you have any left over it's important to really seal it up. It's recommended that you add a light skim of water on top of the Sairset, put the lid on tight, then wrap around the lid with electrical tape or similar.

If stored in room temp conditions it should last a long time. Remember to mix well prior to using again.

Sizes Available:

  • 1 Pint Jar      = 2 1/4 lbs = 6 Bricks (on average).
  • 1 Gallon Pail = 18 lbs = 48 Bricks (on average).
  • 55 lb Pail       = 142 Bricks (on average).

Sold individually.

Click here for for the SDSand Technical Data Sheet.


Sign up today!