Light Load U-cup Seal with Straight Cut Lips (8500) | Product Series

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

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

Where to Buy

Light load symmetrical U-cup with knife-trimmed straight-cut scraper ID & OD lip for rod and piston sealing applications.

Technical Specifications

  • Groove Width: 0.062 to 0.500 inch
  • Maximum Operating Pressure: 2000 psi - Oil, 250 psi - Air
  • Minimum Operating Temperature: -65 °F
  • Maximum Operating Temperature: 400 °F
  • For Fluid Type: Air, Oil, Broad Range, Water, Steam, Oil, Fuel, Low Temp Water, Drilling Mud, Water Glycol, Bases, Acids, Skydrol
  • Color: Black
  • Durometer: 80 to 90 Shore A
  • Thermal Application Type: Low Temperature (< -30°F), Standard Temperature (-30 to 250°F), High Temperature (260 to 400°F), Expanded Low and High Temperature (< -30°F, > 250°F)
  • Polymer Material Options: Nitrile Butadiene Rubber (NBR, XNBR), Fluorocarbon Rubber (FKM, FPM), Ethylene Propylene Rubber (EPM, EPR, EPDM)
  • Specifications Met: None
  • Media: Multiple
  • Unit of Measure: Length: inch
  • Pressure Rating: Hydraulic to 2000 psi
  • Maximum Surface Speed: 0.5 m/sec, 1 m/sec
  • Seal Type: Light Load Symmetrical U-cup with Straight Cut, Scraper ID and OD Lip Style
Safety Warning

Full Product Description

**Availability: A sampling of Parker’s part numbers are shown in the configurator above for select materials and sizes. If the material and dimensions required are not shown, assistance with part number configuration may be found in the literature documents in the Product Support tab. To check current tooling, review the Part Number Look-up document. Contact Parker for requirements outside typical ranges.

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.

Standard Materials:
• N4180A80 NBR; Temp -40 / +250F; Pressure* 1,250 psi hydraulic (250 psi pneumatic); Surface speed** <1.6 ft/s
• N4274A85 XNBR; Temp -10 / +250F; Pressure* 1,750 psi hydraulic (250 psi pneumatic); Surface speed** <1.6 ft/s
• V4208A90 FKM; Temp -5 / +400F; Pressure* 2,000 psi hydraulic (250 psi pneumatic); Surface speed** <1.6 ft/s
• E4259A80 EPDM; Temp -65 / +300F; Pressure* 1,250 psi hydraulic (250 psi pneumatic); Surface speed** <1.6 ft/s

*Pressure range shown is for systems without wear rings. If used with wear rings, consult Engineering Section (Section2) of Parker’s Fluid Power Seal Design Guide, Catalog EPS5370.

**Surface speed for pneumatic applications <3.3 ft/s

Alternate Materials: For applications that may require an alternate material, please contact your Parker EPS representative.

Typical applications:
• Dynamic sealing of hydraulic & pneumatic cylinders and equipment components

Related Documents

Training
Basic Sealing Technology-Linear Sealing
Compliance, Certifications & Safety
EPS Division, Nacogdoches, ISO 9001 AS9100D AS9104/1
EPS Division, SLC, IATF 16949:2016
EPS Division, SLC, ISO 9001:2015 and AS9100D in Accordance With AS9104/1
Selector Guides
Piston Seal Decision Tree
Rod and Buffer Seal Decision Tree
Contact & Support Information
Design Action Request--DAR
Frequently Asked Questions
Literature and Reference Materials
Fluid Power Seal Design Guide--EPS 5370
8400 and 8500 Symmetrical U-cup Seals
Installation Techniques for Linear Fluid Power Seals
Installation Techniques for Linear Fluid Power Seals
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Products Inside Diameter (inch) Outside Diameter (inch) Gland Depth Seal Material
4274850200125 0.125 0.250 0.063 N4274A85
4180850200125 0.125 0.250 0.063 N4180A80
4180850200187 0.187 0.312 0.063 N4180A80
4180850300187 0.187 0.375 0.094 N4180A80
4180850400187 0.187 0.437 0.125 N4180A80
4208850200187 0.187 0.312 0.063 V4208A90
4274850200187 0.187 0.312 0.063 N4274A85
4180850200250 0.250 0.375 0.063 N4180A80
4180850300250 0.250 0.438 0.094 N4180A80
4180850400250 0.250 0.500 0.125 N4180A80
4208850200250 0.250 0.375 0.063 V4208A90
4208850400250 0.250 0.500 0.125 V4208A90
4259850300250 0.250 0.438 0.094 E4259A80
4274850300250 0.250 0.438 0.094 N4274A85
4274850400250 0.250 0.500 0.125 N4274A85
4180850300312 0.312 0.500 0.094 N4180A80
4180850400312 0.312 0.562 0.125 N4180A80
4208850300312 0.312 0.500 0.094 V4208A90
4274850300312 0.312 0.500 0.094 N4274A85
4274850400312 0.312 0.562 0.125 N4274A85
4180850400375 0.375 0.625 0.125 N4180A80
4208850200375 0.375 0.500 0.063 V4208A90
4274850400375 0.375 0.625 0.125 N4274A85
4274850400437 0.437 0.687 0.125 N4274A85
4180850400437 0.437 0.687 0.125 N4180A80
4180850400500 0.500 0.750 0.125 N4180A80
4208850400500 0.500 0.750 0.125 V4208A90
4259850400500 0.500 0.750 0.125 E4259A80
4274850400500 0.500 0.750 0.125 N4274A85
4180850400562 0.562 0.812 0.125 N4180A80
4208850400562 0.562 0.812 0.125 V4208A90
4180850300625 0.625 0.813 0.094 N4180A80
4180850400625 0.625 0.875 0.125 N4180A80
4208850400625 0.625 0.875 0.125 V4208A90
4274850400625 0.625 0.875 0.125 N4274A85
4274850600625 0.625 1.000 0.188 N4274A85
4180850400687 0.687 0.937 0.125 N4180A80
4180850400750 0.750 1.000 0.125 N4180A80
4208850400750 0.750 1.000 0.125 V4208A90
4274850400750 0.750 1.000 0.125 N4274A85
4274850600750 0.750 1.125 0.188 N4274A85
4180850400812 0.812 1.062 0.125 N4180A80
4208850400812 0.812 1.062 0.125 V4208A90
4274850400812 0.812 1.062 0.125 N4274A85
4180850400875 0.875 1.125 0.125 N4180A80
4208850400875 0.875 1.125 0.125 V4208A90
4274850400875 0.875 1.125 0.125 N4274A85
4180850400937 0.937 1.187 0.125 N4180A80
4180850500937 0.937 1.250 0.156 N4180A80
4180850401000 1.000 1.250 0.125 N4180A80
4180850501000 1.000 1.313 0.156 N4180A80
4180850801000 1.000 1.500 0.250 N4180A80
4208850401000 1.000 1.250 0.125 V4208A90
4208850501000 1.000 1.313 0.156 V4208A90
4259850401000 1.000 1.250 0.125 E4259A80
4274850401000 1.000 1.250 0.125 N4274A85
4274850801000 1.000 1.500 0.250 N4274A85
4180850501062 1.062 1.375 0.156 N4180A80
4180850401125 1.125 1.375 0.125 N4180A80
4180850501125 1.125 1.438 0.156 N4180A80
4180850501187 1.187 1.500 0.156 N4180A80
4208850501187 1.187 1.500 0.156 V4208A90
4274850501187 1.187 1.500 0.156 N4274A85
4180850401250 1.250 1.500 0.125 N4180A80
4180850501250 1.250 1.563 0.156 N4180A80
4208850501250 1.250 1.563 0.156 V4208A90
4180850501312 1.312 1.625 0.156 N4180A80
4180850501375 1.375 1.688 0.156 N4180A80
4180850601375 1.375 1.750 0.188 N4180A80
4208850601375 1.375 1.750 0.188 V4208A90
4274850501375 1.375 1.688 0.156 N4274A85
4180850501500 1.500 1.813 0.156 N4180A80
4180850601500 1.500 1.875 0.188 N4180A80
4180850601625 1.625 2.000 0.188 N4180A80
4208850601625 1.625 2.000 0.188 V4208A90
4274850601625 1.625 2.000 0.188 N4274A85
4180850601750 1.750 2.125 0.188 N4180A80
4208850601750 1.750 2.125 0.188 V4208A90
4274850601750 1.750 2.125 0.188 N4274A85
4180850601875 1.875 2.250 0.188 N4180A80
4180850701937 1.937 2.375 0.219 N4180A80
4180850602000 2.000 2.375 0.188 N4180A80
4180850602125 2.125 2.500 0.188 N4180A80
4208850602125 2.125 2.500 0.188 V4208A90
4274850602125 2.125 2.500 0.188 N4274A85
4180850602250 2.250 2.625 0.188 N4180A80
4180851202250 2.250 3.000 0.375 N4180A80
4274850602250 2.250 2.625 0.188 N4274A85
4180850602375 2.375 2.750 0.188 N4180A80
4274850602375 2.375 2.750 0.188 N4274A85
4180850602500 2.500 2.875 0.188 N4180A80
4274850602500 2.500 2.875 0.188 N4274A85
4180850702562 2.562 3.000 0.219 N4180A80
4208850702562 2.562 3.000 0.219 V4208A90
4180850602625 2.625 3.000 0.188 N4180A80
4180850802750 2.750 3.250 0.250 N4180A80
4208850602750 2.750 3.125 0.188 V4208A90
4180850602750 2.750 3.125 0.188 N4180A80
4180850702812 2.812 3.250 0.219 N4180A80
4208850702812 2.812 3.250 0.219 V4208A90
4274850702812 2.812 3.250 0.219 N4274A85
4180850602875 2.875 3.250 0.188 N4180A80
4180850703000 3.000 3.438 0.219 N4180A80
4208850703000 3.000 3.438 0.219 V4208A90
4274850603000 3.000 3.375 0.188 N4274A85
4180850603000 3.000 3.375 0.188 N4180A80
4180850703062 3.062 3.500 0.219 N4180A80
4180850803250 3.250 3.750 0.250 N4180A80
4180850703312 3.312 3.750 0.219 N4180A80
4180850803375 3.375 3.875 0.250 N4180A80
4180850803500 3.500 4.000 0.250 N4180A80
4208850803500 3.500 4.000 0.250 V4208A90
4274850803500 3.500 4.000 0.250 N4274A85
4208850803750 3.750 4.250 0.250 V4208A90
4180850803750 3.750 4.250 0.250 N4180A80
4180850403875 3.875 4.125 0.125 N4180A80
4180850404000 4.000 4.250 0.125 N4180A80
4180850804000 4.000 4.500 0.250 N4180A80
4274850804250 4.250 4.750 0.250 N4274A85
4180850804250 4.250 4.750 0.250 N4180A80
4180850904437 4.437 5.000 0.281 N4180A80
4208850904437 4.437 5.000 0.281 V4208A90
4180850804500 4.500 5.000 0.250 N4180A80
4208850804500 4.500 5.000 0.250 V4208A90
4180850804750 4.750 5.250 0.250 N4180A80
4180850904937 4.937 5.500 0.281 N4180A80
4180850905000 5.000 5.563 0.281 N4180A80
4180851005125 5.125 5.750 0.313 N4180A80
4180851005375 5.375 6.000 0.313 N4180A80
4208851005375 5.375 6.000 0.313 V4208A90
4274851005375 5.375 6.000 0.313 N4274A85
4180850905437 5.437 6.000 0.281 N4180A80
4208850905437 5.437 6.000 0.281 V4208A90
4180851005500 5.500 6.125 0.313 N4180A80
4180851205750 5.750 6.500 0.375 N4180A80
4180850905937 5.937 6.500 0.281 N4180A80
4180851006000 6.000 6.625 0.313 N4180A80
4180851006375 6.375 7.000 0.313 N4180A80
4208851006375 6.375 7.000 0.313 V4208A90
4274851006375 6.375 7.000 0.313 N4274A85
4180850906437 6.437 7.000 0.281 N4180A80
4208850906437 6.437 7.000 0.281 V4208A90
4180851006500 6.500 7.125 0.313 N4180A80
4180851007000 7.000 7.625 0.313 N4180A80
4180851007375 7.375 8.000 0.313 N4180A80
4208851007375 7.375 8.000 0.313 V4208A90
4274851007375 7.375 8.000 0.313 N4274A85
4180851007500 7.500 8.125 0.313 N4180A80
4180851008000 8.000 8.625 0.313 N4180A80
4180851008500 8.500 9.125 0.313 N4180A80
4180851209000 9.000 9.750 0.375 N4180A80
4180851109312 9.312 10.000 0.344 N4180A80
4208851109312 9.312 10.000 0.344 V4208A90
4180851209500 9.500 10.250 0.375 N4180A80
4180851210000 10.000 10.750 0.375 N4180A80
4208851611000 11.000 12.000 0.500 V4208A90
4180851211250 11.250 12.000 0.375 N4180A80
4208851211250 11.250 12.000 0.375 V4208A90
4208851613000 13.000 14.000 0.500 V4208A90
4180851313187 13.187 14.000 0.406 N4180A80
4208851313187 13.187 14.000 0.406 V4208A90
4208851315187 15.187 16.000 0.406 V4208A90
4180851315187 15.187 16.000 0.406 N4180A80
4208851417125 17.125 18.000 0.438 V4208A90
4180851417125 17.125 18.000 0.438 N4180A80
4208851519000 19.000 19.938 0.469 V4208A90
4180851621000 21.000 22.000 0.500 N4180A80
4008850702812 2-13/16 3-1/4 0.219 N4008A80
4180850400750-ND 3/4 1 0.125 N4180A80
4182850803500 3-1/2 4 0.250 N4182A75
4182850804500 4-1/2 5 0.250 N4182A75
4182850804500-YD 4-1/2 5 0.250 N4182A75
4182850904437 4-7/16 5 0.281 N4182A75
4182851005375 5-3/8 6 0.313 N4182A75
4182851007375-YD 7-3/8 8 0.313 N4182A75
4182851109312 9-5/16 10 0.375 N4182A75
4182851313187 13-3/16 14 0.406 N4182A75
4183850400250 1/4 1/2 0.125 E4183A80
4183850400500 1/2 3/4 0.125 E4183A80
4183850400625 5/8 7/8 0.125 E4183A80
4183850400750 3/4 1 0.125 E4183A80
4183850400812 13/16 1-1/16 0.125 E4183A80
4183850400875 7/8 1-1/8 0.125 E4183A80
4183850500937 15/16 1-1/4 0.156 E4183A80
4183850501187 1-3/16 1-1/2 0.156 E4183A80
4183850501187-BD 1-3/16 1-1/2 0.156 E4183A80
4183850601750 1-3/4 2-1/8 0.188 E4183A80
4183850602125 2-1/8 2-1/2 0.188 E4183A80
4183850702812 2-13/16 3-1/4 0.219 E4183A80
4183850702812-BD 2-13/16 3-1/4 0.219 E4183A80
4183850804500 4-1/2 5 0.250 E4183A80
4183850904437 4-7/16 5 0.281 E4183A80
4183850906437-BD 6-7/16 7 0.281 E4183A80
4183851005125 5-1/8 5-3/4 0.313 E4183A80
4183851005375 5-3/8 6 0.313 E4183A80
4183851007375 7-3/8 8 0.313 E4183A80
4205850401000 1 1-1/4 0.125 V4205A75
4205850501187 1-3/16 1-1/2 0.156 V4205A75
4205850501187-YD 1-3/16 1-1/2 0.156 V4205A75
4205850602375 2-3/8 2-3/4 0.188 V4205A75
4207850601000 1 1-3/8 0.188 E4207A90
4208850401000-GD 1 1-1/4 0.125 V4208A90
4208850500937 15/16 1-1/4 0.156 V4208A90
4208850501312 1-5/16 1-5/8 0.156 V4208A90
4208850501500 1-1/2 1-13/16 0.156 V4208A90
4208850601625-MERCFREE 1-5/8 2 0.188 V4208A90
4208850602000 2 2-3/8 0.188 V4208A90
4208850602125-GD 2-1/8 2-1/2 0.188 V4208A90
4208850602250 2-1/4 2-5/8 0.188 V4208A90
4208850702562-GD 2-9/16 3 0.219 V4208A90
4208850702812-MERCFREE 2-13/16 3-1/4 0.219 V4208A90
4208850905437-GD 5-7/16 6 0.281 V4208A90
4208851007375-GD 7-3/8 8 0.313 V4208A90
4208851211250-GD 11-1/4 12 0.344 V4208A90
4242850400250 1/4 1/2 0.125 N4242A75
4257851613000 13 14 0.500 N4257A85
5065850400750 3/4 1 0.125 P5065A88
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