Rod sealing set Prädifa series CR, Caveseal® | Product Series

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Rod sealing set Prädifa series CR, Caveseal® Rod sealing set Prädifa series CR, Caveseal®

Rod sealing set Prädifa series CR, Caveseal®

Where to Buy

Rod seal, double-acting, PTFE slipper seal design. Low friction. Suitable for o-ring grooves. For limited dynamic conditions.

Technical Specifications

  • Thermal Application Type: High Temperature (< 205°C), Expanded Low and High Temperature (< -35 to 140°C), Standard Moderate Temperature (-35 to 100°C)
  • Media: Hydraulic
  • Polymer Material Options: Polytetrafluoroethylene (PTFE, mPTFE, TFM, Polon®), Ultra-High Molecular Weight Polyethylene (UHMW-PE)
  • Maximum Operating Pressure: 160 bar
  • Minimum Operating Temperature: -200 to -25 °C
  • Maximum Operating Temperature: 80 to 230 °C
  • Maximum Surface Speed: 4 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: No
  • Pressure Rating: Low Pressure (< 160 bar)
Safety Warning

Full Product Description

The CR double-acting rod sealing set featuring a Caveseal design consists of a PTFE rod sealing ring and an elastomer O-ring as a preloading element. The sealing set is suitable for dynamic applications as an alternative to an O-ring in situations requiring optimum sealing performance and friction. The Caveseal design enables installation in smallest grooves.
Due to the material combination of the slipper ring (PTFE) and the O-ring (elastomer), this product is suitable for a wide range of applications, especially for aggressive media and/or high temperatures. An extensive selection of materials is available for specific application profiles.

• Good sealing performance in extremely small assembly conditions.
• Excellent wear resistance.
• Minimal break-away and dynamic friction and no stick-slip tendency ensures uniform motion even at low speeds.
• Good energy efficiency due to low friction.
• Assembly on one-part piston is possible.
• High temperature resistance assured by suitable O-ring compound selection.
• Adaptable to nearly all media thanks to high chemical resistance of the sealing ring and large O-ring compound selection.
• Short axial assembly length.
• Short radial assembly depth.
• Installation in closed and undercut housings.
• Available in diameters from 4 to 4500 mm.
• Can be used in existing O-ring grooves.
• Additional sizes of machined products available on short notice.

Range of application:
The CR rod sealing set has been designed to replace standard O-rings. For dynamic applications we recommend our OA product series for pneumatic applications and ON or OE for hydraulic applications.

The CR rod sealing set is available in the following compounds:
07401 - Industrial applications
314 - Heavy-duty
07402 - High temperatures
07403 - Low temperatures
07404 - General-purpose

Related Documents

Literature and Reference Materials
PTFE Seals Design Guide--PTD3354
Caveseal--Rod sealing set CR--PTD3354
Installation Guidelines for SlipperSeals® - Rod Seals--PTD3354
Product Demos & Tutorials
How to Properly Store and Clean Elastomer Seals
Mixing the right ingredients: Material Development at Parker-Prädifa
Parker Final Exam in Physics / Sealing Systems Put to the Test
Communities, Blogs & Industry Links
Sealing solutions for the mobility of the future
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Products Inside Diameter (mm) Outside Diameter (mm) Element Height (mm) Groove Width Minimum Working Temperature (C) Maximum Working Temperature (C) Seal Material
CR063001207401D 63 72.4 7.1 7.1 -30 110 Polytetrafluorethylene additives
CR095001207401D 95 104.4 7.1 7.1 -30 110 Polytetrafluorethylene additives
CR110001207401D 110 119.4 7.1 7.1 -30 110 Polytetrafluorethylene additives
CR115001207401D 115 124.4 7.1 7.1 -30 110 Polytetrafluorethylene additives
CR120001207401E 120 132.2 9.5 9.5 -30 110 Polytetrafluorethylene additives
CR007005207401A 7 9.9 2.4 2.4 -30 110 Polytetrafluorethylene 40% bronze
CR012001207401B 12 16.5 3.6 3.6 -30 110 Polytetrafluorethylene additives
CR018031407401A 18 20.9 2.4 2.4 -30 80 Ultra High Molecular Weight Polyethylene
CR008001207402A 8 10.9 2.4 2.4 -25 200 Polytetrafluorethylene additives
CR014001207402B 14 18.5 3.6 3.6 -25 200 Polytetrafluorethylene additives
CR030001207402C 30 36.2 4.8 4.8 -25 200 Polytetrafluorethylene additives
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