Page 476 - RYCO Hydraulics Technical Manual 2019

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 HIGHER TECHNOLOGYRYECQOUAQLUSALGIRTEYATER PERFORMANCE