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Light Load U-Cup Seal with Beveled Lip (8400)
Brand: Parker HannifinParker's 8400 Profile U-cup 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 8400 style utilizes a beveled lip, ideal for wiping fluid film. Available in a variety of elastomer compounds to cover a wide range of applications.
The 8400 U seal 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 ring 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
- Airl Oil, Broad Range, Water/Steam
Groove Width
- 0.062 to 0.500
Industry Standards
- None
Length Unit of Measure
- inch
Maximum Pressure (psi)
- 2000 psi - Oil, 250 psi - 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, 90A, 85A
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 Beveled Cut 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
- Parker EPS Division Nacogdoches facility ISO 9001 2000 and EN JISQ AS9100 2004 Certification pdf 277 KB
- Parker EPS Division Salt Lake City facility ISO 13485 2003 Certification pdf 200 KB
- Parker EPS Division Salt Lake City facility ISO 9001 2008 Certification pdf 637 KB
- Parker EPS Division Salt Lake City facility ISO TS 16949 2009 Certification pdf 506 KB