yeah for the original OTAs i buy the ARD 51mm CVDs not the R31's 48.5mm
TRF o-rings are pure silicone. If you get any mineral oil on them, or even solvents
they will expand and go spongey... gotta use 100% silicone oil with these.
with the HMS after a lot of R&D i've gotten them to stay sealed... their main problem
is their top cap plastic insert causes too much leverage on the rubber seal
& they don't have a ring lip to stop the seal collapsing into the barrel.
I take a Tamiya plastic top and trim the circumference to fit inside the Eagle cap;
T's top has required ring lip and the Eagle green seal stays put. Don't overtighten.
The Eagle o-rings don't leak nor drag too much so i've left them in there so far.
I stopped using the HMSes mainly 'cos they aren't threaded body
yay R2 package arrives
my gold nightmare can be rollin'