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Light Load U-Cup Seal with Straight Cut Lips (8500)
Light Load U-cup Seal with Straight Cut Lips (8500)

Light Load U-Cup Seal with Straight Cut Lips (8500)

Brand: Parker Hannifin
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Parker's 8500 Profile U seal is a light load, symmetrical lip seal for use in either rod or piston sealing applications. 

The thin, flexible lip design reacts to low pressure and provides an extremely smooth, steady movement with less break away force required because of the inherent low friction. 

The 8500 style utilizes a knife-trimmed, straight-cut scraper lip, ideal for additional lip interference and wiping contamination away from the sealing edge.

Available in a variety of elastomer compounds to cover a wide range of applications. 

The 8500 profile U-cup is primarily designed for pneumatic applications to 250 psi, however, it can also be used in low to medium pressure hydraulic applications. 

The pressure range of the U-cup seal may be extended by incorporating an 8700 Series anti-extrusion back-up.

Specifications

Brand

Color

  • Black

Compatible Hydraulic Fluid

  • Oil, Fuel, Low Temp Water, Drilling Mud, Water Glycol, Acide/Base, Water, Steam, Acid, Skydrol, Air

Fluid Compatibility

  • Air, Oil, Broad Range, Water/Steam

Groove Width

  • 0.062 to 0.500"

Industry Standards

  • None

Length Unit of Measure

  • inch

Maximum Pressure (psi)

  • 2,000 - Oil, 250 - Air

Maximum Surface Speed Air (m/sec)

  • 1

Maximum Surface Speed Oil (m/sec)

  • 0.5

Maximum Working Temperature (°F)

  • 400° F

Media

  • Multiple

Minimum Working Temperature (°F)

  • -65° F

Nominal Hardness

  • 80A, 85A, 90A

Nominal Hardness Range

  • < 90 A, 90 A

Polymer Family

  • NBR (Nitrile-Butadiene), FKM, FPM (Fluorocarbon), EPDM, EPM, EPR (Ethylene Propylene Rubber), XNBR (Carboxylated Nitrile-Butadiene)

Pressure Range (psi)

  • Hydraulic to 2000 psi

Seal Type

  • Light Load Symmetrical U-Cup with Straight Cut, Scraper ID & O.D. Lip Style

Thermal Application (°F)

  • Low Temperature (< -30° F), Standard Temperature (-30° to 250° F), High Temperature (260° to 400° F), Expanded Low & High Temperature (< -30° F, > 250° F)

Documentation

Data Sheets

Certifications & Approvals

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