You have to remember that only on mcmaster.com have the transposed the numbers 9462 as 9642. This was a typo done when they posted this product from loctite to mcmaster inventory. It's one and the same, just a F-up. There are other adhesives that Hyrol makes for the gun that I'll be trying and posting here. Particularly part # 1813a136 and another one I can't remember right now. It's like a Five minute aeropoxy that has the same strength as 9462. Plus, what some people don't know is that if you place aeropoxy you can heat it to 180 with a heat gun for an hour and it will cure to a 72 hour cure with no harm no foul. It's in the product literature for the adhesive. You dont' HAVE to wait.