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BNA WA (SINGLE ACTION PISTONSEAL FOR A OPEN GROOVE)

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BNA WA is a two-piece piston seal consisting of NBR / cotton fabric, vulcanized together with NBR rubber, an L-shaped pom guide ring, without a pom locking ring (KR

PRODUCT ADVANTAGES:

  • ​Functions even with poor surfaces
  • Limited space due to the open housing in one-piece piston
  • Reinforced cotton fabric base prevents the seal from extrusion
  • Good sealing at low pressures

APPLICATION:

Mining equipment , mobile hydraulics , presses and standard cylinders.

INSTALLATION:

Easy assembly with a piston in one piece. The design of the open groove provides an advantage for easy mounting. If'm assembly tools are used the mounting area should not have any sharp edges. Before mounting the BNA WA should be lubricated with oil system

 

MATERIAL: POM / COTTON FABRIC NBR 80 SH

 

OPERATING CONDITIONS 
MEDIA Mineral oils(DIN 51524)  HFA and HFB HFC
TEMPERATURE -30°C +105°C +5°C +60°C -30°C +60°C
PRESSURE ≤500 Bar ≤500 Bar ≤500 Bar
SPEED ≤0.5 m/sn ≤0.5 m/sn ≤0.5 m/sn

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

SURFACE ROUGHNESS Ra Rmax
Sliding Surface ØD-Ød ≤0.4 μm ≤3.2 μm
Groove Base ØDb-Ødp ≤1.8 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.

 

 

 

 

 

 

 

  

 

 

 

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# Vota code Name Application Material Pressure
(bar)		 Temperature °C Sliding Speed (m/s)
hydraulic-seals-piston-seal/bna-wa BNA WA BNA WA (SINGLE ACTION PISTONSEAL FOR A OPEN GROOVE) PISTON FABRIC-NBR-POM 500 -30°C +105°C 0.5
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