The ULTIMATE® Upgrade Series cylinder grease a necessary component of any serious upgrade.All moving parts must be kept well lubricated to avoid heat built up and excessive wear as well as securing a tight seal between cylinder and piston head O-ring . Features:High-tech. Silicon grease.Recommended to use on non-metal parts.Temperature range -40°C~+287°C.For in-depth information on ULTIMATE® Upgrade Series, see catalogue.