Reduced vacuum performance, increased wear, and potential pump failure. Always match oil to pump type.
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Welch vacuum pump oils are precision-formulated for maximum pump efficiency and longevity. Our Gold Oil is a synthetic hydrocarbon blend ideal for corrosive gases and high-vacuum systems, offering extended service intervals. Premium Oil supports direct-drive pumps with superior thermal stability and low vapor pressure. Labovac Oil, a high-purity mineral oil, is designed for single and two-stage rotary vane pumps.
Discover all the Welch oils and choose the one that suits you best.
Do you want to learn how to change oil for rotary vane vacuum pumps? You can do so on our knowledge hub page dedicated to this topic
Synthetic DirecTorr™ Gold Vacuum Oil
Gold Oil 1L
Perfect for quick service or small systems, Gold Oil keeps your pump clean, stable, and corrosion-resistant.
Gold Oil 1 Gal.
Ideal for routine maintenance, Gold Oil extends pump life and resists varnishing in harsh chemical environments.
Gold Oil 5 Gal.
Best for high-volume users, Gold Oil delivers long-term protection and deep vacuum performance.
DirecTorr™ Premium Vacuum Oil
Premium Oil 1L.
Premium Oil resists breakdown at high RPMs and keeps direct-drive pumps running clean.
Premium Vacuum Oil (5 Liter)
Ideal for routine maintenance, Premium Oil delivers stable vacuum performance and protects against sludge and varnish.
Premium Vacuum Oil (10 liter)
Best for occasional use, Premium Oil offers long-term reliability and thermal stability
Premium Vacuum Oil (20 liter)
Best for frequent use, Premium Oil offers long term reliability and stability in demanding direct drive systems.
Premium Vacuum Oil (200 liter)
Best for industrial or bulk use, Premium Oil offers long-term reliability and stability in demanding direct-drive systems.
Labovac 10 Mineral Oil
Labovac 10 Rotary Vane Pump Oil 1L
Oil for Rotary Vane Pumps, LABOVAC 10 - 1 Liter - mineral oil ► rotary vane pumps (P-E and P-Z series), Chemvac, piston pumps
Labovac 10 Rotary Vane Pump Oil 5L
Oil for Rotary Vane Pumps, LABOVAC 10 - 5 Liters - mineral oil ► rotary vane pumps (P-E and P-Z series), Chemvac, piston pumps
Labovac 10 Rotary Vane Pump Oil 10L
Oil for Rotary Vane Pumps, LABOVAC 10 - 10 Liters - mineral oil ► rotary vane pumps (P-E and P-Z series), Chemvac, piston pumps
Labovac 10 Rotary Vane Pump Oil 20L
Oil for Rotary Vane Pumps, LABOVAC 10 - 20 Liters - mineral oil ► rotary vane pumps (P-E and P-Z series), Chemvac, piston pumps
Labovac 10 Rotary Vane Pump Oil 200L
Order Welch LABOVAC 200L mineral oil for rotary vane pumps. Keep your vacuum systems running smoothly with genuine accessories.
Labovac 12S Paraffin Based Mineral Oil
Labovac 12 S Rotary Vane Pump Oil 1L
LABOVAC 12 - 1 Liter - PFPE oil ✓ for pumping oxygen, ozone ✓ suitable for etching processes in semiconductor technology
Labovac 12 S Rotary Vane Pump Oil 10L
LABOVAC 12 - 10 Liters - PFPE oil ✓ for pumping oxygen, ozone ✓ suitable for etching processes in semiconductor technology
Labovac 12 S Rotary Vane Pump Oil 20L
Oil for Rotary Vane Pumps, LABOVAC 12S - 20 liter - paraffin based mineral oil ► pumping air, chemically inert permanent gases
PFPE Labovac 13 Oil
Labovac 13 PFPE Oil (1 liter)
Ideal for lab scale vacuum systems handling oxygen, ozone and reactive halogens.
Labovac 13 PFPE Oil (5 Liter)
Industrial grade PFPE oil for demanding vacuum applications involving ozone, halogens and high-reactivity gases.
Labovac 13 PFPE Oil (10 liter)
Industrial grade PFPE oil for demanding vacuum applications that involve ozone, halogens, and high-reactivity gases.
Labovac 14 Polyaphaolefin Oil
Labovac 14 Rotary Vane Pump Oil 1L
Oil for Rotary Vane Pumps, LABOVAC 14 - 1 Liter - polyalphaolefin synthetic oil (PAO) ✓ high chemical stability ► pumping gases
Labovac 14 Rotary Vane Pump Oil 5L
Oil for Rotary Vane Pumps, LABOVAC 14 - 5 Liters - polyalphaolefin synthetic oil (PAO) ✓ high chemical stability ► pumping gases
Labovac 14 Rotary Vane Pump Oil 10L
Oil for Rotary Vane Pumps, LABOVAC 14 - 10 Liters - polyalphaolefin synthetic oil (PAO) ✓ high chemical stability ► pumping gases