Check the listing for details. CPS Vacuum Pump Replacement Oil Drain Cap with Strap. Condition: New. Listed at 2.95 USD. Gregoriou Brothers Refrigeration Since 1979Frosty-Freeze CPS Vacuum Pump Replacement Oil Drain Cap with Strap CPS PRODUCTS (1) One Vacuum pump cap & strap For 1/4" male flare ports Part# VPXOC Replacement VP4 & VP6 Oil Cap with retaining strap. For the CPS Vacuum Pump Models, VP4 and VP6. $.0 CPS PRODUCTS Vacuum pump cap & strap For 1/4" male flare ports Part# VPXOC Replacement VP4 & VP6 Oil Cap with retaining strap. For the CPS Vacuum Pump Models, VP4 and VP6. Gregoriou Brothers Refrigeration Since 1979Frosty-Freeze CPS Vacuum Pump Replacement Oil Drain Cap with Strap .0 CPS PRODUCTS Vacuum pump cap & strap For 1/4" male flare ports Part# VPXOC Replacement VP4 & VP6 Oil Cap with retaining strap. For the CPS Vacuum Pump Models, VP4 and VP6. .0 CPS PRODUCTS Vacuum pump cap & strap For 1/4" male flare ports Part# VPXOC Replacement VP4 & VP6 Oil Cap with retaining strap. For the CPS Vacuum Pump Models, VP4 and VP6.