Check the listing for details. Yellow Jacket, Vacuum Pump Drive Coupling For Ritchie Vacuum Pumps #93811. Condition: New. Listed at 36.99 USD. Gregoriou Brothers Refrigeration Since 1979Frosty-Freeze Pump Drive Coupling For Ritchie Vacuum Pumps #93811 YELLOW JACKET Refrigeration Products Part# 93811 PUMP DRIVE COUPLING For use on the following Yellow Jacket Vacuum pumps; *LARGE, 12, 18 & 24 CFM Vacuum Pumps. For Shaft Size: 5/8" O.D. *Love Joy, Inc. Coupling # L-075 625$YELLOW JACKET Refrigeration Products Part# 93811 PUMP DRIVE COUPLING For use on the following Yellow Jacket Vacuum pumps; *LARGE, 12, 18 & 24 CFM Vacuum Pumps. For Shaft Size: 5/8" O.D. *Love Joy, Inc. Coupling # L-075 625 at 20:43:04 PDT, the following: Gregoriou Brothers Refrigeration Since 1979Frosty-Freeze Pump Drive Coupling For Ritchie Vacuum Pumps #93811 YELLOW JACKET Refrigeration Products Part# 93811 PUMP DRIVE COUPLING For use on the following Yellow Jacket Vacuum pumps; *LARGE, 12, 18 & 24 CFM Vacuum Pumps. For Shaft Size: 5/8" O.D. *Love Joy, Inc. Coupling # L-075 625 at 20:43:04 PDT, the following: YELLOW JACKET Refrigeration Products Part# 93811 PUMP DRIVE COUPLING For use on the following Yellow Jacket Vacuum pumps; *LARGE, 12, 18 & 24 CFM Vacuum Pumps. For Shaft Size: 5/8" O.D. *Love Joy, Inc. Coupling # L-075 625 at 20:43:04 PDT, the following: