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8/11/2026 3:28:50 PM EDT
Well, I have a new Dead Air Mojave 45 suppressor that I ended up losing the piston to barrel internal o-ring.

I can't seem to locate the size or even a part number.
I did some google searching but all I came up with were the wrong sizes.

Thread pitch is 16x1 LH if anyone has a clue.  
8/11/2026 3:40:31 PM EDT
[#1]
2-018

You want Viton (FKM/fluorocarbon) for the higher temperature capability.

Posterity! You will never know, how much it cost the present Generation, to preserve your Freedom! I hope you will make a good Use of it. If you do not, I shall repent in Heaven, that I ever took half the Pains to preserve it.---John Adams
8/11/2026 4:07:47 PM EDT
[#2]
Quote History
Originally Posted By intheburbs:
2-018

You want Viton (FKM/fluorocarbon) for the higher temperature capability.

View Quote


I love u long time!


thank you sir!
8/11/2026 4:22:15 PM EDT
[#3]
Actually, it looks like that size is the one I ordered already.

it looks like it's the correct size for the piston to retainer cap.
but not the inside threaded portion that helps to keep the suppressor centered on the end of the barrel.
8/11/2026 11:06:48 PM EDT
[#4]
I wish dead air listed the damn o-ring.
Rugged lists o-rings for their pistons!
8/16/2026 7:13:06 PM EDT
[#5]
It turned out to be a -015.

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