Characteristics of Hose Elastomers - RYCO Hydraulics

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. 

 

COMMON NAME
Chemical 
Name
NEOPRENE
Poly- 
Chloroprene
NITRILE
Acrylonitrile 
& Butadiene
HYPALON™
Chlorosulfonated 
Polyethylene
EPDM
Ethylene 
Propylene Diene
CPE
Chlorinated 
Polyethylene
POLYESTER
Polyamide 
Resin
TEFLON™
Fluorinated 
Thermoplastic
Common 
Designation
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 Fair 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

HYPALON™, TEFLON™ DUPONT