A blend of R-23 and R-116 intended for very-low-temperature refrigeration systems, typically the low stage of a multi-stage system. R-508B has properties similar to R-503 and can be used to replace either R-13 or R-503 in an existing system. The discharge temperature does not increase significantly compared to R-13, in contrast to the increase seen with R-23. POE lubricants should be used and it may still be necessary to charge hydrocarbon oil additives to ensure proper oil return. Check with OEM for specific oil and charging recommendations.

Part NumberDescription
5R508B5 LB. CYLINDER
10R508B10 LB. RETURNABLE CYL.
20R508B20 LB. RETURNABLE CYL.
70R508B70 LB. RETURNABLE CYL.

 

Download SDS for R-508B.

Download the R-508B product information
from the NRI Refrigerant Reference Guide