High Vacuum Silicone Grease is a stiff and non-melting silicone lubricating material that maintains its consistency from -40 Degree C to 225 Degree C. The Silicone Grease is ideal for vacuums reaching between 1 X 10-5 and 1 X 10-6 mm Hg. The Silicone Grease needs to be preconditioned under vacuum and temperature until particular limits are reached. High Vacuum Silicone Grease can be availed in different packaging options to suit individual requirement.