Generally, seals with spring loaded lips are used for retaining oil lubricants and non-spring loaded lips are used for low speed grease retention.
Ground metal O.D. seals are more suited for steel and cast iron housing.
Rubber O.D. seals are more suited to soft alloy or plastic housing, for rough bore finishes above 100 μ inch (2.54μ m), or for applications where the housing is subject to large thermal expansion.
A press fit metal O.D. seal has greater holding strength and better alignment.
Various Types of Shaft Seals
Material Selection
Metal Parts Materials
The metal case and garter spring are important components of Shaft seal.
The most common case is carbon steel. Stainless steel is an option for corrosion resistance.
The garter spring is generally piano wire but stainless steel is available.
Metal Parts Materials
The metal case and garter spring are important components of Shaft seal.
The most common case is carbon steel. Stainless steel is an option for corrosion resistance.
The garter spring is generally piano wire but stainless steel is available.
Shaft Eccentricity
Two types of shaft eccentricities effect seal performance.
They are dynamic runout (double dynamic eccentricity) and offset (shaft to bore misalignment or static eccentricity).
Special Helix Design
Two types of shaft eccentricities effect seal performance.
They are dynamic runout (double dynamic eccentricity) and offset (shaft to bore misalignment or static eccentricity).
