UCON base stocks are polyalkylene glycols (PAGs), which are polymers derived from ethylene oxide, and propylene oxide and butylene oxide.

LB Fluids are alcohol-started base stocks of all oxypropylene groups (m=0) with one terminal hydroxyl group. They are water insoluble and available in a variety of molecular weights and viscosities.

50-HB Fluids are alcohol-started base stocks containing equal amounts, by weight, of oxyethylene and oxypropylene groups with a single terminal hydroxyl group. They are water soluble at ambient temperature and are available in a variety of molecular weights and viscosities.

75-H Fluids are diol-started base stocks containing 75 weight percent oxyethylene and 25 weight percent oxypropylene groups with two terminal hydroxyl groups. They are water soluble at temperatures below 75°C and are available in a variety of molecular weights and viscosities.