SYN ST High Performance H-1 Special | Lubriplate Lubricants Co. Food Machinery Grade Silicone Lubricant Manufactured with PTFE, this new H1, NLGI # 3 silicone lubricant is compatible with most rubber and other non-silicone elastomers. Recommended for use on O-rings and seals on bottling, dairy, food processing and dispensing equipment, it is highly resistant to hot water, steam and alkaline solutions. *SYN ST High Performance H1 Special is available in tubes, cartridges and pails.