Did you have a spill? Did you mix some 74-30 off ratio? Humidity demons got to the 74 A before you did?

Extra part A only for 74 series Polyurethane rubber. Part A is universal for the 74 series of urethane rubber products.

For professional use only. Use in a well ventilated area.

WARNING: This product can expose you to chemicals including Toluene diisocyanate (TDI), which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov. 

Important!! This is part A only! Must have the relevant B for this system to work!