WARNING
HBD Industries, Inc. recommends a hose for its normal service as
outlined in this catalog. Other applications should be referred to
your respective marketing representative.		 whipping hose, high pressure or high velocity discharge, chemical
contact, high temperature materials, explosion or fire.
In any application there may be an inherent risk of bodily injury or
property damage and the user is responsible for implementation of
adequate safety precautions. It is the responsibility of the buyer to
advise the user of proper instructions for safe use and/or precau-
tions and to warn the user of consequences of failure to heed such
instruction. Should a hose assembly fall during use with pressure,
injurious and/or damaging chemicals, elevated temperature materi-
als, explosives or flammable materials, then serious bodily injury
or destruction of property could result from impelled couplings,		 In known high risk areas, it is recommended that hose inspections
be performed at frequent intervals related to the risk factor. Hose
with obvious damage should be scrapped or tested before placing
in use. These inspections should include tube condition, cover con-
dition, leaking or slipped couplings and proof test.

Detailed information concerning storage, care and maintenance may
be found in the Hose Handbook published by The Rubber Manu-
facturers Association, 1901 Pennsylvania Avenue, NW, Washing-
ton, D.C. 20006 and in SAE Recommended Practices J 1273

General Characteristics of Commonly Used Rubber Compounds


Raw rubbers or elastomers are mixed with various chemicals to provide a wide range of physical properties
for specific service needs. The chart below shows the general characteristics of some of the most common
rubber compounds. In addition, many types may be blended in almost unlimited combinations to obtain the
most desirable properties.
*From "RMA Hose Handbook" published by The Rubber Manufacturers Association, Inc.

ASTM
Designation
D1418		Common NameCompositionGeneral Properties
CRNeopreneChloropreneGood weathering resistance. Flame retarding. Moderate resistance to
petroleum-based fluids. Good physical properties.
NRNaturalIsoprene, naturalExcellent physical properties including abrasion and low temperature
resistance. Poor resistance to petroleum-based fluids.
IRPolyisopreneIsoprene, syntheticSame properties as natural ruber.
IIRButylIsobutylene-isopreneVery good weathering resistance. Low permeability to air. Good physical
properties. Poor resistance to petroleum-based fluids.
NBRBuna NNitrile-butadieneExcellent resistance to petroleum-based fluids. Moderate resistance to
Nitrile$$aromatics. Good physical properties.
SBRSBRStyrene-butadieneGood physical properties, including abrasion resistance. Poor resistance
to petroleum-based fluids.
CSMHypalonChloro-sulfonyl-
polyethylene		Excellent ozone, weathering and acid resistance. Good abrasion and
heat resistance. Fair resistance to petroleum-based fluids.
EPDMEthylene
Propylene
Rubber		Ethylene-propylene-
diene-terpolymer		Excellent ozone, chemical and aging characteristics. Poor resistance to petroleum-based fluids
FKMFluoroelastomer
Viton		Hexafluoropropylene
vinylidene fluoride		Excellent high temperature resistance, particularly in air or oil. Very good
chemical resistance.
ECOHydrinEthylene oxide and
Chloromethyl orirane		Excellent oil and ozone resistance. Fair flame resistance and low
permeability to gases. Good low temperature properties.
XLPECross-linked
polyethylene		Polyethylene and
cross-linking agent		Excellent chemical resistance with good heat and electrical properties.
UHMWPEUltra High
Molecular Weight
Polyethylene		PolyethyleneExcellent chemical resistance with good heat and electrical properties.
Revised: 21 Sep 97
Copyright © 1997 St. Louis Factory Supply Inc.
bobstlfs@juno.com

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