Review on 🛁 Danco 80793 Graphite Valve Stem Packing - 3/32" x 24" - Carded - Black - 1 Piece by Ynot Karlen

There was a slight hiss when steam and water escaped from a 15 year old valve so I bought these. I used 3 wraps when I really needed about 1.5, they flowed out like soft clay when I tightened the nut. I was shocked that it was so gentle and really didn't expect it to work. Turn on my thermostat and increase the temperature to the max. It's perfectly quiet and I tightened the nut snugly but not too tightly. It is fully sealed and requires no gasket. If you look closely at my photo, you can see that the graphite flows from the nut onto the stem. Good stuff. UPDATE The material dissolved under steam pressure after a week. Instead I'll try to create a seal using Auto RTV. UPDATE Used silicone car RTV and it worked great. I can't see it leaking anytime soon because the material pretty much blocks any vapor trying to get out.