Figure 14.4. Effect of aeration on oil aging.5 Chart shows percent retained elongation after aging for 28 days at 150°C in Mobil 276.
High-pressure oil seals, as the name suggests, are designed to withstand pressures far beyond the standard range. They are engineered with superior materials and advanced designs to handle pressures reaching several thousand bar, making them essential in industries such as automotive, aerospace, mining, and petrochemicals where high-pressure applications are commonplace.The basic principle of sealing is straightforward – the flexible lip is held against the rotating part (usually the shaft) whilst the casing (or O.D.) is pressed into the housing or bore and holds the seal in place. The sealing lip needs some form of lubrication to avoid overheating and is usually energized by means of a garter spring.
As shown in Figure 1, sealing devices come in two types: contact and non-contact.
Oil seals are among the major contact type sealing devices.
The primary function of an oil seal is to create a barrier between the rotating or moving parts of a machine and prevent oil or other fluids from leaking out. This helps to ensure that the machinery operates smoothly and efficiently without any loss of lubrication or contamination of the surrounding environment. In addition to preventing leakage, oil seals also help to retain lubricant within the system, extending the life of the equipment.
In addition to their functional benefits, custom molded gaskets also offer cost savings over other sealing solutions