OIL SEAL – OPTIMAL FLUID SEALING PERFORMANCE
Oil Seal normally consists of three basic components: the rubber sealing element, the metal insert (case) and the garter spring. The purpose of the sealing element is to stop the fluid from leaking between the shaft and housing. The metal insert will give rigidity and strength to the seal while it is being held in the bore or recessed groove. The garter spring will help make the rubber sealing element more effective.

In precision bearings, oil seal helps prevent lubricants from escaping the bearings or a specific area. In machine components, oil seal helps prevent abrasives, corrosive moisture and other harmful contaminants from entering machinery. It also helps stop mixture of two different mediums, such as lubricating oil and water.

TYPES

Twenty different types of oil seals on a white background.
The diagram of oil seal types

COMMON SPECIFICATIONS

ASTM/DIN ISO NBR ACM VMQ (Silicone) FKM HNBR (NEM) PTFE
Wear Resistance very good moderate moderate very good moderate good
High Temperature Oil Resistance 100 °C 150 °C 180 °C 200 °C (max. 150 °C operate temperature) 150 °C (max. 140 °C operate temperature) 200 °C
Low Temperature -40 °C -30 °C -50 °C -25 °C -40 °C -80 °C
Oil Resistance good good moderate very good good extremely good
Common Specifications of Oil Seal
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FEATURES

Provides good low temperature resistant capability
Low swelling in hydrocarbon fluids
High sealing performance by optimum
Lightweight, compact and energy-saving
Compatibility with the fluid contacted
High degree of elasticity
Wear resistance
Low friction coefficient
Exact fit
Durable
Best in quality
CLASSICAL APPLICATIONS

Automotive equipment
Manufacturing
Off-highway
Oil refineries
Power transmission
Gearboxes
Hydraulic cylinders.
High voltage equipment
Construction
Medical and aerospace
Chemical processing
Pulp and paper
Oil and refining
Food and beverage
Water and waste water
Oil seal diagram installed on automotive equipment on a white background.
Applied in automotive equipment

  The blue oil seals are mounted on the hydraulic cylinder on a white background.
Applied in hydraulic cylinder

  A power transmission with the oil seal component is on the gray background