Miller MS-143XD PTFE Dry Lubricant, available to buy in various sizes.

Features

• Slippery, with outstanding lubricity (low coefficient of friction).
• Thermally stable (from cryogenic to 500oF/260oC).
• Nonflammable.
• Chemically inert.
• Insoluble
• Non-migrating (contain no silicones).