Page 476 - RHAU-MKT RYCO Product Technical Manual 2018-12-14 v1-9
P. 476

 TECHNICAL
CHARACTERISTICS OF HOSE ELASTOMERS
The characteristics shown below are for the normal, or usual, range of these specific Elastomers. Characteristics can be changed somewhat, through different compounding, to meet the requirements of specialised applications. Each elastomer has a unique combination of strengths and weaknesses. Depending on each specific application, the elastomer must possess the correct combination of properties if it is to perform satisfactorily.
Tube and cover elastomers may occasionally be upgraded to take advantage of improved materials and technology.
For detailed information on specific hose tube or cover check the Chemical Compatability Table on page 475, and also the specific hose specifications page.
   COMMON NAME
 NEOPRENE
 NITRILE
HYPALONTM
 EPDM
  CPE
POLYESTER
  TEFLONTM
  Chemical Name
 Poly - Chloroprene
 Acrylonitrile & Butadiene
Chlorosulfonated Polyethylene
 Ethylene Propylene Diene
  Chlorinated Polyethylene
Polyamide Resin
  Fluorinated Thermoplastic
          Common
 CR
 NBR
CSM
 EPDM
  CPE
PE-E
  PTFE
  Flame Resistance
 Very Good
 Poor
Good
 Poor
  Good
Poor
  Good
  Petroleum Base Oils
 Good
 Excellent
Very Good
 Poor
  Very Good
Very Good
  Excellent
  Diesel Fuel
 Good to Excellent
 Excellent
Good
 Poor
  Very Good
Very Good
  Excellent
  Resistance to Gas Permeation
 Good
 Good
Good to Excellent
 Fair to Good
  Good
Good
  Good to Excellent
  Weather
 Good to Excellent
 Fair to Good
Very Good
 Excellent
  Good
Excellent
  Excellent
  Ozone
 Good to Excellent
 Poor for Tube Good for Cover
Very Good
 Excellent
  Good
Good
  Excellent
  Heat
 Good
 Good
Very Good
 Excellent
  Excellent
Good
  Excellent
  Low Temperature
 Fair to Good
 Poor to Fair
Poor
 Good to Excellent
  Good
Good
  Excellent
  Water - Oil Emulsions
 Excellent
 Excellent
Good
 Poor
  Excellent
Very Good
  Excellent
  Water/Glycol Emulsions
 Excellent
 Excellent
Excellent
 Excellent
  Excellent
Very Good
  Excellent
  Phosphate Esters to 82°C (180°F)
 Fair (For Cover)
 Poor
Excellent (not for Aerospace types)
 Very Good
  Very Good
Good
  Excellent
  Phosphate Ester Base Emulsions
   Fair (For Cover)
   Poor
  Excellent (not for Aerospace types)
   Very Good
    Very Good
  Good
    Excellent
    NOTE: HYPALONTM and TEFLONTM are Trademarks of DUPONT
   474 RYCO QUALITY
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