Rubber hydraulic hose and ... - Flipbook - Seite 298
Safety information | Danfoss
Hose selection
Fluid compatibility
This chart indicates the suitability of various
elastomers and metals for use with fluids to
be conveyed. It is intended as a guide only
and is not a guarantee. Final selection of the
proper hose style, seal, or material of metal
components is further dependent on many
factors including pressure, fluid and ambient
temperature, concentration, duration of
exposure, etc.
6. Information on o-rings and seal options
for swivel joints and couplings, and how to
specify them, are shown in the respective
sections of this catalog.
7. For further details on the products shown in
this catalog, and their applications, contact:
Danfoss
DPS_FC_EMEA_TechSupport@danfoss.com
www.Danfoss.com
How to use the chart
Max. operating
temperature range
Buna-N†
none
–40°C to +121°C
[–40°F to +250°F]
Neoprene
none
–54°C to +100°C
[–65°F to +212°F]
EPR (Ethylene
Propylene
Rubber)/
EPDM
none
–54°C to +149°C
[–65°F to +300°F]
Viton*
–29°C to +204°C
[–20°F to +400°F]
†Buna-N temperature range -54°C to +107°C
[-65°F to +225°F]. Also per MIL-R-6855.
*Viton is a trademark of The Chemours Company FC, LLC.
298
G = Good – Fluid has minor to moderate
effect.
C = Conditional – Service conditions should
be described to Danfoss Aeroquip for
determination of suitability for application.
U = Unsatisfactory
NOTE: Special precautions are necessary in
gaseous applications due to the potential
volume of gaseous fluid in the system. Unless the
cover is perforated, hose styles with rubber or
thermoplastic covers are not suitable for gases
above 250 psi. Hose styles with perforated covers
are so noted in their construction descriptions.
WARNING
Compatibility of hose fittings with conveyed
fluid is an essential factor in avoiding chemical
reactions that may result in release of fluids
or failure of the connection with the potential
of causing severe personal injury or property
damage.
Hose tube identification
1. Synthetic rubber
Seal
elastomer
E = Excellent – Fluid has little or no effect.
The differences between ratings “E” and “G” are
relative.
Both indicate satisfactory service. Where there
is a choice, the
materials rated “E” may be expected to give
better or longer service than those rated “G”.
1. The chart has separate sections for rating
elastomers for use as hose inner tubes and as
seals. Ratings for a given elastomer may not
always be the same in both sections.
2. Both the elastomer and the metal must be
considered when determining suitability of a
combination for a hose assembly, adapter with
o-ring, swivel joint or coupling.
3. Locate the fluid to be conveyed and
determine the suitability of the elastomeric
and metal components according to the
resistance ratings shown for each.
4. Refer to the inner tube materials groupings
under “Hose tube identification”.
5. Dimensional and operating specifications
for each hose can be found on the catalog
pages shown with each hose part number.
Seal elastomer data
Resistance key rating
2. PTFE
3. Synflex thermoplastic elastomer
4. AQP
5. Special application hose
(not included in fluid chart)
Fuel
LPG
Railroad air brake
Silicone
Truck air brake
A/C
6. EPDM rubber
EMEA Danfoss rubber hydraulic hose, fitting, tooling and accessories category catalog
The Fluid Compatibility chart is intended for
reference use only.
The information in this chart pertains strictly
to material compatibility and is not intended
to be used as an application guide. For
information on specific applications not
included in this catalog, please contact
Danfoss Aeroquip.
Note 1 - Rubber-covered hose must be perforated to
allow gas to escape.
Note 2 - Due to the widely different additives in
these fluids, testing should be done on the
actual fluid being considered.
