Vacuum Pump Exhaust Filter, no Adapter: Amazon.com: Industrial & Scientific
Ideal Vacuum | Heavy Duty Oil Mist Exhaust Filter with 1 1/2 inch NPT Inlet For Vacuum Pumps up to 50 CFM, Part No. HDL-PSG848-150HC Atlas Copco GVD 40
Agilent MS 40+ Exhaust Filter for the MS40+ Vacuum Pump 9499201, G1960-80039, Agilent MS 40+ Exhaust Filter for the MS40+ Vacuum Pump 9499201, G1960-80039