Is High Temperature mortar (like HeatStop 50) okay as a high-temp mortar for my pizza oven?

Construction Materials Needed to Build a BrickWood
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First and foremost - NEVER EVER USE A HIGH-TEMP MORTAR FROM A PAIL OR BUCKET TO BUILD YOUR BRICKWOOD BOX OR WOOD-FIRED PIZZA OVEN! Unless you are building the Cortile Barile or Cupola and using the pre-mix to seal the oven, then NEVER TOUCH THE STUFF!

It is not designed for BrickWood Ovens DIY Pizza Oven Ktis or the BrickWood Box.

Only use dry / bagged High-Temperature mortars that are NON-WATER SOLUABLE. If you use an Indoor / Water Soluable mortar and it gets wet, it will crumble over time.

NON-WATER SOLUABLE MORTAR ONLY!!!

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Is SAIRBIND an acceptable high temp mortar?
I was told it was, but the bags say “refractory”

Thanks

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Looking at the product specs - It looks perfect.

I just emailed our HWI rep and requested a Spec & MSDS Sheet… but looking at the specs listed on this Amazon page, they look spot on!

https://amz.run/4kXJ

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