Quote Originally Posted by phezthie View Post
greetings to all....

i just want to know your opinion as to what kind/type/brand of o-ring is best suited for aircon with 134 refrigerant... Likewise, any insight as to where it can be bought will be highly appreciated.. TIA

for R134a refrigerant, the o-rings to use is HBNR. back in the days when we used R12, we used buna o-rings and seals or nitrile o-rings, the buna or nitrile o-rings do not seal against leak of R134a better than HBNR. the o-rings should be soaked or prelubricated with PAG oil prior to installation