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Externally pressurized seal
| Oil glossary |
A seal that has pressure acting on the seal parts from an external independent source of supply.
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Independent, английский
- One who logs and sells his output on the open market; not associated with a mill or under company or dealer contract (19).
- Независимый; автономный
- Независимый, автономный
- Независимый, самостоятельный; рантье (лицо, живущее на доходы от капитала)
- Независимый
- A независимый
- A merchant ship under naval control, but sailing alone and unescorted by any warship.
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Extreme pressure (ep) additive, английский
- Lubricant additive that prevents sliding metal surfaces from seizing under conditions of extreme pressure. at the high local temperatures associated with metal-to-metal contact, an ep additive combines chemically with the metal to form a surface film that prevents the welding of opposing asperities, and the consequent scoring that is destructive to sliding surfaces under high loads. reactive compounds of sulfur, chlorine, or phosphorus are used to form these inorganic films.
- Chemical compound imparting extreme pressure characteristics to a lubricant with the objective of reducing wear under conditions where rubbing or sliding accompanies high contact pressures, as in heavily loaded gears, particular the hypoid type.
Ep (extreme pressure) lubricants, английский
- Lubricants that impart to rubbing surfaces the ability to carry appreciably greater loads than would be possible with ordinary lubricants without excessive wear or damage.
- Lubricants formulated with additives to prevent sliding metal surfaces from direct contact and seizing under extreme loads; under such conditions, the high local temperature at the interface causes the additives to react, combining chemically with the metal surfaces to form a protective film that prevents welding or seizure. the principal ep additives are compounds of sulfur, phosphorus and chlorine; common laboratory tests for ep properties include astm d-2509 and d-2782 and astm d-2596 and d-2783.
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