Code Description d(f8) D(H9) D1(H11) B(-0/+0.2) B1 r

703

K703 is a two piece double acting wiper which consists of one special designed PTFE profile ring and an o-ring as energizing element. K703 ensures that foreign particles are not introduced into the hydraulic systems , avoiding wear and damage to all the internal components including seals.

PRODUCT ADVANTAGES
• Low friction , free of stick-slip
• Long service life
• High sliding speed
• Space-saving construction
• Wide range of temperature and chemicals depending on the o-ring material
• Wide range of dimensions

APPLICATION
Mobile hydraulics , aluminum injection machines and industrial equipment.

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.

 

 

 

MATERIAL   CODE
NBR 90 SHORE A NB7001
PTFE/BRONZE   PT6003

OPERATING CONDITIONS

MEDIA

MIneral Oils
(DIN 51524)

HFA and
HFB

HFC

TEMPERATURE

-30°C
+105°C

+5°C
+60°C

-30°C
+60°C

SPEED

≤5 m/s

≤5 m/s

≤5 m/s

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

SURFACE ROUGHNESS

Ra

Rmax

Sliding Surface  Ød

≤0.4 μm

≤3.2 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

 
 
 

NOTES
When K703 wiper is being used with double lip sealing element we recommend a pressure relieving bore between the seal and wiper. For special applications that require high temperatures or resistance to chemicals , piston seal is being manufactured with special mixture PTFE and FKM material.

 

 

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