Naphthenic Base Stocks


HYDROCAL™ naphthenic base stocks are produced exclusively by Calumet using a multi-stage hydrotreating process operating at pressures above 2500 psi. This process offers the unique ability to produce naphthenic base stocks that meet currently established performance standards as well as standards to be developed in the future.

  • Over 30 years of history manufacturing naphthenic base stocks
  • Broad range of viscosities available from 38 SUS @ 100°F to Bright Stock
  • All HYDROCAL products pass the IP346 Standard
  • Meets FDA 21 CFR 178.3620(c) requirements

HYDROCAL™ naphthenic base stocks are ideal across a broad range of industrial applications including:

Metalworking Fluids
Heat Transfer Fluids
Hydraulic Oils

Compressor Oils
Gear Oils
Aviation Hydraulic Fluids

Cutting Oils
Automatic Transmission Fluids

Additional naphthenic base oils available from Calumet include:

Calumet can custom blend to meet specific customer requirements

For product inquiries, contact our Product Support team at +1.800.437.3188