Spark plug seal

Details Spark plug seal Spark plug seal

1978-10-10

1980-03-11

Vertiz, O. R.

Electric lamp and discharge devices

Spark plugs

Plural part insulating means

313118, 106 735, H01T 1300, H01T 1320, C04B 3520

Patent

active

041930126

ABSTRACT:
A silicon-talc sealing material is disclosed. The sealing material is made up of about 15 to 30 percent by weight of silicon metal powder and about 85 to 70 percent by weight of talc. It has been found to be admirably suitable for sealing around the center wire of spark plugs in which the sealing material is subjected to temperatures of about 900.degree. F. or higher. In such applications, the sealing material is unexpectedly advantageous by comparison with previously known materials, because it has significantly higher holding power, because it allows significantly less gas leakage, or because it has both advantages.

REFERENCES:
patent: 2020967 (1935-11-01), Rohde
patent: 2106578 (1938-01-01), Schwartzwalden et al.
patent: 2367445 (1945-01-01), Stoltenberg
patent: 2437205 (1948-03-01), Middleton et al.
patent: 2503194 (1950-04-01), Cipriani et al.

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