Small trial size excellent for including with any consumer o-ring or gasket purchase! Lube Tube lubricates and seals with a patented barrier of PFTE. It's unique formula containing silicon dioxide eliminates the need for multiple lubes. It is safe on metals, rubber, plastics, fabric, wood, leather, painted surfaces, etc… It is waterproof, odorless, non-staining, non-flammable, non-corrosive, non-rusting, and biodegradable. It is environmentally safe and will not melt, dry out, form gummy deposits, separate, crack, evaporate, run, or drip. Viscosity remains the same in hot or cold temperatures with a range of -65degrees F to 500 degrees F. If it squeaks, leaks, rubs, scrapes, slides, binds, grinds, or needs a seal, it needs Lube Tube!