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Shaft Seal, Spring Loaded, Double Lip, Steel with Buna-N Lips

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Specifications for this item
Upper Temperature Range
250  Degrees Fahrenheit
Material Type
Steel with Buna-N Lips
Color Name
Maximum Pressure
10  PSI
Brand Name
Small Parts
System of Measurement
LowerTemperature Range
-40  Degrees Fahrenheit

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Key Features

  • Shaft seal helps retain lubricants and other fluids in hydraulic or pneumatic systems
  • Steel case for press-fitting into housing bore and nitrile rubber (also called Buna-N) sealing lip and dust lip for resistance to abrasion, oil, and hydraulic fluids
  • Spring loaded sealing lip to enhance sealing action and compensate for lip wear
  • Durometer hardness of 90A for resistance to wear and abrasion
  • Temperature range of -40 to 230 degrees F for use in low-temperature applications

Product Description

This spring loaded, double-lip shaft seal has a steel case, a Buna-N sealing lip and dust lip, and is used for sealing moving shafts and rods in hydraulic and pneumatic systems. The case is made of steel to protect the lips and provide a surface for press-fitting into the housing, and the lips are made of Buna-N (also called nitrile rubber) with a durometer hardness rating of 90A for resistance to wear, abrasion, oil, and hydraulic fluids. This shaft seal has a helically coiled garter spring to help maintain contact between the sealing lip and the surface of the shaft. It has a temperature range of -40 to 230 degrees F, making it applicable for use in low-temperature hydraulic and pneumatic cylinders.

Radial shaft seals help retain lubricants and other fluids in hydraulic and pneumatic systems by sealing a rotating, oscillating, or reciprocating shaft or rod against its housing. They have a flexible lip (made of an elastomer such as nitrile or polyurethane) that comes into contact with the surface of the shaft to form a dynamic seal. Shaft seals generally have a steel outer case where the lip is bonded, and the outside diameter of the case is slightly larger than the bore of the housing to achieve a tight, press-fit seal. Double-lip seals, which have a second sealing lip, are typically used to separate two different system fluids. Radial shaft seals are used in various aircraft, automobiles, construction equipment, and foundry machines, among others.

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