A liquid which acts as a lubricant when applied then sets to a pliable semi-solid plastic in the thread. Low torque vibrational forces are less likely to loosen the fastening but a moderate additional force can break the bond for disassembly.
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Amazon.co.uk
5.0
£6.59
MOLYSLIP - COPASLIP | High Temperature Copper Anti-Seize Grease | Withstands Extreme Temperature (Up To 1100°C) | Protects Against Galling, Seizure Rust and...

Amazon.co.uk
5.0
£17.49
Permatex 09128 Copper Anti-Seize Lubricant: Extreme Temperature Protection (Up to 932°C) for Galling, Seizure, Rust, and Corrosion Prevention in Cars & Vans...