FDI-DICHTUNGEN®
FDI® -O- Ring
Typ:51
The FDI®- O-Ring model 51 is reinforced
developed to withstand high pressure applications
at large gap situations.
with antisticking coating ( reduced friction )

 
The risk of gap extrusion is quite low as shown in
graph beside.

 
 Pressure load : max. 100 MPa / 1000 Bar
 
material: Range of
temperature
°C
min  / max.		 chemicel
resistance
FDI® 1000 - 40 bis +100   as NBR
FDI® 1004 * - 40 bis +120   as NBR
FDI® 2000 - 40 bis +170   as HNBR
FDI® 2004 * - 40 bis +170   as HNBR
FDI® 3000 - 30 bis +200   as FPM
FDI® 3004 * - 30 bis +200   as FPM
*with antisticking coating ( reduced friction )
Fitting instructions:

- don’t fit over sharp corners (threads, nuts) !
- don’t twist
- ratio of extension: approx. max. 2 % .
shaft design: d ≥ A x 100
or equal to achieve max. extension allowed.

Recommended cross sections for static and dynamic applications
as shown in following table.
d S r1 r2 static use dynamic use
(mm) (mm) max. max. A (mm) H (mm) A (mm) H (mm)
< 100 6 0,2 0,5 4,8 7 ± 0,1 5,1 7,5 ± 0,1
100-200 8 0,2 0,5 6,4 9,4 ± 0,1 6,8 10 ± 0,1
200-300 10 0,4 0,8 8 11,7 ± 0,1 8,5 12,5 ± 0,1
300-450 12 0,4 0,8 9,6 14 ± 0,2 10,2 15 ± 0,2
450-600 14 0,4 0,8 11,2 16,4 ± 0,2 11,9 17,5 ± 0,2
600-900 16 0,5 1 12,8 18,7 ± 0,2 13,6 20 ± 0,2
< 900 18 0,5 1 14,4 21,1 ± 0,3 15,3 22,5 ± 0,3
Other sizes and core dia available on request.
how to order:

pls indicate:

- model, material
- d = fixing diameter
- A = radial height of housing
- H = axial width of area
- radial runout
- axial movement
The data shown above are based on long lasting experience in the manufacturing and use of sealing elements. As there are many unknown possible parameters and conditions in practice, which may limit standard performance, it is requested that the user runs practical tests. Except as expressly stated, Friedrich‘s liability, expressed or implied, is limited to the published selling price of our defective item.

FDI® and FDI-DICHTUNGEN® are registered trademarks of Friedrich GmbH.
© 2009/0 by FDI® - Design