Tuning FX Impact O-Ring Size

[beercanshot]

I have an original first generation .25 cal Impact SN 181977. I may need to replace the regulator housing O-ring, that's the one that is difficult to remove from the receiver block. I've seen it sized at 8.5 x 1.5 and 9 x 1.5 and 10 x 1.5. Which size is it and what durometer hardness does it need to be.



thanks in advance

beercanshooter

 

[2L8]

Beercanshooter, I believe you need this O-ring,

C39 19763 O-ring 9x1,5 NBR 90, until serial no. 183534

I have a master set of Impact O-rings. If you DM me your address I will mail you one.



Patrick

 

[icycrosshairs]

@beercanshot

Another member on the forum just posted a thread with a spreadsheet of FX impact o-ring sizes It can be found here:



https://www.airgunnation.com/topic/all-impacts-m3-back-to-the-x-oring-chart-and-where-to-find-them/?referrer=1



Kudos to Patrick for offering to help ya out.