ROTARY (DOUBLE ACTION PISTONSEAL)

product

ROTORY piston seal is a two piece double-acting sealing set which consists of one special mixture PTFE profile ring and an O-ring as energizing element.

PRODUCT ADVANTAGES

  • Able to use at high pressures and low peripheral speeds
  • Low friction , free of stick-slip
  • Simple groove design and low axial housing heights
  • Long service life
  • High sliding speed
  • Wide range of temperature and chemicals depending on the o-ring material
  • Minimum static and dynamic friction coeficient for a minimum energy loss and operating temperature

APPLICATION:

Mobile hydraulics , grippers and rotary joints.

INSTALLATION:

We recommend using special assembly tool (See section; Hydraulic Sealing Elements General Installation Information). It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the sealing element must be oiled with system oil

NOTES: For special applications that require high temperatures or resistance to chemicals , ROTORY rod seal is being manufactured with special mixture PTFE and FPM material. The permissible sealing gap values of ROTORY piston seal for rotating application is given in the below table.

PERMISSIBLE SEALING GAP   Smax(mm)
B (mm) 150 Bar 250 Bar 300 Bar
2.2 0.15 0.10 0.075
3.2 0.20 0.15 0.10
4.2 0.20 0.15 0.10
6.3 0.30 0.20 0.15
8.1 0.30 0.20 0.15

Note: The largest sealing gap value occurring on the non-pressurized side of the seal does have a vital importance for the function of the seal and in this respect it is quite important to use the S value lower than the above indicated numbers. 

MATERIAL: PTFE / NBR 70 SH

 

OPERATING CONDITIONS 
MEDIA Mineral oils(DIN 51524)  HFA and HFB HFC
TEMPERATURE -30°C +105°C +5°C +50°C -30°C +40°C
PRESSURE ≤300 Bar ≤300 Bar ≤300 Bar
PERIPHERAL SPEED ≤5.0 m/sn ≤5.0 m/sn ≤5.0 m/sn

Note: The above data are maximum values and cannot be used at the same time.

SURFACE ROUGHNESS Ra Rmax
Sliding Surface Ød ≤0.2 μm ≤2.0 μm
Groove Base ØD ≤1.6 μm ≤6.3 μm
Groove Flanks B ≤3.2 μm ≤16 μm

Note: It is recommended to have 50% to 90% of the working surface material contact area value.

 

 

 

 

 

 

  

 

 

 

Loading... please wait
# Vota code Name Application Material Pressure
(bar)
Temperature °C Sliding Speed (m/s)
zuiger-afdichting/rotary-piston ROTARY PISTON ROTARY (DOUBLE ACTION PISTONSEAL) PISTON PTFE-NBR 300 -30°C +105°C 5.0
PTFE-FPM 300 -20°C +170°C 5.0
Find product

CB = Custom build (price on request)
* = Stock item
Stock = 0 (and not a Stock* or CB product) -> minimum item value € 10.00

# Description Info Stock Price
{{product.number}} {{product.description}} {{product.item_type_name.substring(0, 5)}} {{product.stock}} {{product.price|customCurrency:"€":",":".":2}}