M18x1.5 fill adapter o ring size?

[seanfrev]

Does anyone know the size and part number for the o ring on my .5 liter bottle i use for top offs?

 

[seanfrev]

Anybody? Thanks

 

[Firewalker]

Too vague... like asking "why can't I shoot?"

 

[Firewalker]

My carbon fiber bottles with M18x1.5 threads use size 116, 70 durometer o-rings.

$5.77 for a hundo on Amazon: https://www.amazon.com/dp/B0051XY1O2?psc=1&ref=ppx_yo2ov_dt_b_product_details