Reduced vacuum performance, increased wear, and potential pump failure. Always match oil to pump type.
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.