I have 19 of 20 in the box they have been in conditioned garage, also have 25pcs box of FS ONE MAX foil sausage tube 20oz caulk, added pic of it w/ putty. Call me 804-839-6672 $15 a pad or $150 for all 19.

Moldable firestop putty to help protect electrical outlet boxes, junction boxes and washer/dryer boxes
Approx. Density: 1.6 g/cm³
Color: Red
Surface burning characteristics UL 723 (ASTM E84): Flame spread: 15
Smoke development: 10