This Mica based Anti-Seize compound was designed for use on the threads of automotive engine spark plugs and in other application involving high temperatures.
The anti-seize compound, being a nonconductor of electricity and possessing high heat resistance, is particularly suitable spark plugs. However, because of its insulating properties, it should not be used where mating parts are required to be in good electrical contact.
Former Military Specification: MIL-A-13881
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