Hao Seal Tech's Special O rings Customized

Special O ring Customized for Self-Sealing Brass Coupling

Hao Seal Tehc’s O rings are special to self-sealing brass couplings allows for charging the refrigeration, and air-conditining and heat pump systems without the use of brazing. These couplings are extremely easy to use and are compatible with a wide range of refrigerants. Such as R290, R410A, R448A, R449a, R513A, R134a, R407C and more… They range from 1/4” – 3/4”, and the connections are customizable

UL listed for use with R290 and other flammable refrigerants.