Code Description D(H10) d(h9) d1(h11) ds (h9) B(-0/+0.2) S(-0/+0.2) n r1 r2

K20

K20 is a three piece double acting compact seal which consists one elastomeric nitrile rubber sealing element and two special profiled thermoplastic guide rings.

PRODUCT ADVANTAGES
• Simple groove design , one-piece piston possible
• Simple snap installation
• Economic sealing and guiding solution
• Can be used in small cross-sections

APPLICATION
Agricultural machinery and light duty cylinders.

 

INSTALLATION
Easily assembled into one-piece piston because the guide rings are been produced in split forms. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the sealing elements must be oiled with system oil.

 

MATERIAL   CODE
NBR 80 SHORE A NB8001
POM   PM9901

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

≤150 bar

≤150 bar

≤150 bar

SPEED

≤0.5 m/s

≤0.5 m/s

≤0.5 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

≤10 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
For special applications that require high temperatures , piston seal is manufactured in FKM and special mixture PTFE material.

attachments:
73.91 KB