Approved Refrigerants

All RLS products are suitable for use with the refrigerants below. Contact us about special blends or other refrigerants not listed here. Check your local codes to ensure that RLS fittings are suitable for use with your particular refrigerant.

R-32R-134AR-404AR-407AR-407C
R-407FR-407HR-410AR-417AR-421A
R-422BR-422DR424AR-427AR-434A
R-437AR-438AR-448AR-449AR-450A
R-452AR-453AR-456AR-507AR-513A
R-513BR-718Ethylene GlycolR-22*

*Special order item, includes neoprene o-rings in place of HNBR.

RLS fittings are also compatible with the following industrial (non-refrigerant) gasses: nitrogen, argon, helium and oxygen (non-medical).