Technical Information

Marking, Conversion, Properties

Hose Marking Possibilities

  • Typical hose marking: in longitudinal line with ink transfer tape or printed directly on hose cover
  • Information about date of production and hose serial number typically embossed into hose cover separately

Special marking also possible upon the customer request.

Conversion constants

Length: millimeters
inches
meters
inches
x 0.03937
x 25.4001
x 39.37
x 0.0254
= inches
= millimeters
= inches
= meters
Working pressure: MPa x 10
bar x 0.1
MPa/0.006896
PSI x 0.006896
= bar
= MPa
= PSI
= MPa
Temperature: 1 °F = 9/5 °C + 32
1 °C = 5/9 (°F–32)

Properties of Rubber Qualities used in Industrial Hoses

  • BR
    Butadiene Rubber: Excellent low temperature and abrasion properties. High resilience
  • CR
    Chloroprene Rubber: Excellent weather and ozone resistance, flame retarding. Moderate resistance to oil and chemical
  • EMP
    Ethylene Propylene: Excellent ozone, weathering, heat, chemicals and ageing resistance. Not oil resistant
  • IR
    Isoprene Rubber: Some properties as natural rubber
  • NBR
    Nitrile Butadiene Rubber: Excellent resistance to petroleum based fluids (moderate resistance to aromatics) Good physical properties
  • NBR-PVC
    NBR/Polyvinyle Chloride: Excellent oil and weathering resistance
  • NR
    Natural Rubber: Excellent physical properties including abrasion and low temperature resistance. Not resistant to oil and fuels.
  • SBR
    Styrene Butadiene Rubber: Good physical properties, including abrasion resistance. Not resistant to oil and fuels

Solvent Information Chart

Aromatic solvents: benzene, naphthalene, cumene, p-cumene, toluene, xylene, cresol, styrene, cyclohexane

Aliphatic solvents: propane, butane, pentane, hexane, heptane, dipentene

Halogenous solvents: chloroform, dichlorobenzene, dichloroethylene, methylenbromid, methylen chlorid, benzyl chloride, carbon tetrachloride, trichlorethylene, carbon disulphide, turpentine, perchlorethylene, dichlorethane

Ketonic solvents: acetone, methyl ketone, isobutyl ketone, methyl ethyl ketone, methyl iso butyl ketone

Ester solvents: butyl acetate, methyl acetate, amyl acetate, isobutyl acetate

Alcohols: methyl, ethyl, butyl, amyl, isopropyl, decyl, isobutyl, diacetone, ethyl hexanol

Amines: aniline, ethylene diamine, diethanol amine, triethanolamine, dimethylamine, monoethanolamine

Chemical Recommendations

This table is only a guide and should be used as such, as the degree of resistance of an elastomer with a particular fluid depends upon such variables as temperature, concentration, pressure, velocity of flow, duration of exposure, aeration, stability of the fluid, etc. Also variations in elastomer types and special compounding of stocks to meet specific service conditions have considerable influence on the results obtained. It is always advisable to test the tube compound under actual service conditions. If this is not practical, tests should be devised that simulate service conditions or the hose manufacturer contacted for recommendations.

The table on page 30-31 lists the more commonly used materials, chemicals, solvents, oils, etc. The recommendations are based on room temperature and pressure conditions normally recommended for the particular type of hose being used. Where conditions beyond this can be met ready, they have been so indicated; where conditions are not normal and cannot readily met, the hose manufacturer should always be consulted.

WARNING:

  • The following data has been compiled from generally available sources and should not be relied upon without consulting and following the hose manufacturer’s specific chemical recommendations. Neglecting to do so might result in failure of the hose to fulfill its intended purpose, and may result in possible damage to property and serious bodily injury.

Chemical Resistance Chart

Marking, Conversion, Properties