FF170 fluorosilicone is a 100% active silicone polymer modified with fluoro-containing groups and is an excellent candidate to consider for difficult nonaqueous foam systems. The benefits of silicone and fluorocarbon chemistries come together in FF170 to help provide long-lasting foam control in a variety of systems. It can be particularly effective in those found with petroleum stocks in high-pressure separators. Conventional antifoams (e.g., those based on polydimethylsiloxanes) are usually soluble and may actually cause foam stabilization rather than foam control. The chemical, petroleum and dry-cleaning industries can benefit from a more potent foam-control agent, such as that found in FF170 fluorosilicone.