Tuning What size is the FX female foster oring

[Glem.Chally]

As the title says need to replace the oring inside the foster adapter that comes with fx guns.

Managed to flip it and it's working for now but unsure of the size.

 

[mubhaur]

I think its number 10

1.78 CSx 6.07 ID mm

 

[Glem.Chally]

Thank you

 

[Tinkers2]

I use O-ring 7.66x1.78 NBR70. The same o-ring in the foster fitting cover that come with the Impact. 

 

[Glem.Chally]

I use O-ring 7.66x1.78 NBR70. The same o-ring in the foster fitting cover that come with the Impact.

Appreciated, I'll try both if I have both.