Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2P19S3R126B found under Compressor Rotary by Refrigerant Recovery Systems Inc. The National Stock Number assigned to this part is 4310014672486, and the Federal Supply Class is 4310 Compressors And Vacuum Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2P19S3R126B.