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US 4,379,062 AGranted
Thread sealing and lubricating composition
OwnerRaymond D. Prengamaninventor
Life of this patent
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Abstract
A thread sealing and lubricating composition which can be employed at elevated temperatures without carburization of stainless steel fittings is disclosed. The composition contains 8-25% finely divided copper flakes, 5-20% finely divided aluminum particles, and 4-15% non-metallic, non-carbon powder suspended in a petroleum vehicle. The preferred composition contains 10% copper flakes, 5% aluminum powder, 5% non-metallic powder and 80% viscous petroleum vehicle.
Claims6
A thread sealing and lubricating composition which comprises:
- (a) 8-25% by weight finely divided copper flakes;
- (b) 5-20% by weight finely divided aluminum particles;
- (c) 4-15% by weight non-metallic, non-carbon powder which is selected from the group consisting of talc, aluminum oxide (Al.sub.2 O.sub.3), magnesium oxide (MgO), silicon dioxide (SiO.sub.2) and calcium oxide;
- and
- (d) 40-83% by weight petroleum vehicle.
2 more elements
Dependencies are inferred from the claim text.