DanaRoto P52

DanaRoto is a PTFE-based sealing system. It consists of a PTFE sealing ring, thanks to which there is a low level of friction on and wear of the rotating surface, and an elastomeric O-ring, which activates the PTFE cap and ensures the sealing on the static side is leaktight. The recompressed O-ring provides the sealing function at low pressures, and when the application is pressurised, the O-ring puts more pressure on the PTFE cap, thus enhancing the sealing performance. Stick-slip-free performance is guaranteed by the material properties of the PTFE cap.

DanaRoto is a double-acting system, which means that there is no preferred pressure direction. The piston seal family provides a sealing effect between the rotating surface and the outer diameter of the seal.

Product details
Technical details
Extreme chemical resistance
Füge hier deinen Tooltip-Text hinzu

Advantages:

  • Low friction
  • Small grooves
  • High wear resistance
  • Excellent form stability

Application Examples

  • Swivel joints

Working conditions:

  • Pressure: 40 Mpa
  • Temperature: NBR O-ring: -30 to +100, FPM O-ring: -10 to +200
  • Application: Pivot movement
  • Speed: 1 m/s
  • Standard: ISO 7425-1
  • Diameter range: 8 to *1200 mm
  • Action: Double-acting
  • Seals larger than 1000 mm please contact us for design details
Frequently used - DanaFlon Material
Intensive movement - High pressure   –200 to +260 °C   –200 to +260 °C
Basis material PTFE PTFE
DanaFlon 55 32
Filler Glass & MoS2 Carbon & Graphite
Colour    Light Gray Dark Black
Extreme form stability and extrusion resistance (yes) (yes)
Lubricating media yes yes
Extreme wear resistance  (yes) (yes)
Wide range of media yes yes
Non-lubricating media yes yes
Food applications no no
Conforms to food regulation  no no
Alternative solution - DanaFlon Material
Intensive movement - High pressure   –200 to +260 °C   –200 to +260 °C
Basis material PTFE PTFE
DanaFlon 41 16
Filler Carbon fibre Mineral & MoS2
Colour    Dark gray  Blue / Gray 
Extreme form stability and extrusion resistance (yes) (yes)
Lubricating media yes yes
Extreme wear resistance  (yes) (yes)
Wide range of media yes yes
Non-lubricating media yes yes
Food applications no no
Conforms to food regulation  no no

O-rings may limit the temperature range and need to be compatible with the media.

The performance of the seal will always depend on the overall picture of the working conditions.

Verification can only be done by testing the seal in the actual working conditions.

DanaRoto P52

Technical details

Here you can see the technical details

* Recommended finish for dynamic sealing surface
  • Ra max (0.2 μm)
  • Rz max (1.25 μm)
  • Rp max (0.63 μm)
  • Tp = 50 - 70% at depth of p= 0.25 Rz

An appropriate quality of the dynamic counterface is essential for good results.
A surface hardness of 55-60 HRC is recommended for a hard layer with thickness min. 0,5 mm

Series Bore
øA H9		 øB h9 G + 0,2- 0 Rmax E Diametral clearance O-Ring
100 bar 200 bar
max. max. Series Cross sect.
P52 00 8 - 29,9 øA - 4,9 2,2 0,4 0,15 0,10 000 1,78
01 30 - 69,9 øA - 7,5 3,2 0,6 0,20 0,15 100 2,62
02 70 - 132,9 øA - 11,0 4,2 1,0 0,25 0,20 200 3,53
03 133 - 329,9 øA - 15,5 6,3 1,3 0,30 0,25 300 5,33
04 330 - 689,9 øA - 21,0 8,1 1,8 0,30 0,25 400 7,00
05 690 - 999,9 øA - 28,0 9,5 2,5 0,45 0,30 - 8,40

Max radial clearance is based on DanaFlon 32 and 100 °C

Part No. example
DanaRoto for 90 mm bore

Delivery times

For special requests, please complete our Request form or call us on +45 4922 4400.

Request form
+45 4922 4400
Engineering request form

Please fill in the form below and we would appreciate it if you attach eventual drawings of hardware or seals to clarify technical demands.