Look at this! It rules! But it's so expensive... I didn't know it until I visited the website. I have some but my dad got it at an amateur radio convention for less, I just don't know how much. I used it to seal my MS around the o-ring. It might have too much friction, and I don't know what silicone lubricant will do to it yet. I'll update this post once I put my gun back together.