General composition Synthetic Fibres Aramid/Mineral/Synth Aramid/Mineral/Glass
  SBR/NBR SBR/NBR NBR/EPDM
Colour/Finish Green Black Yellow
General Properties Versatile Economical Specific oil resistant General purpose Withstands High Pressure / Temp

General Applications Low to medium loading, good resistance to oil, water, steam, fuels & chemicals at moderate temperatures & Pressures Medium loading, excellent resistance to oil, hot water, gases, hydrocarbons and many chemicals. Medium to high loading, excellent resistance to gases, fuels, oil, mild acids & alkalies and wide range of chemicals.

Specific Properties (Typical values)
Tensile Strength MPa DIN 52910
Compressibility ASTM F36
Recovery % ASTM F37
Thickness increase   ASTM F146
ASTM Oil no.3 %  
ASTM Fuel B %  
Stress Relaxation   DIN52913
50Mpa/300 C/16h Mpa  
50Mpa/175  C/16h Mpa  
 
7
11
50
 
15
15
 
20
22
 
 
8.5
10
55
 
12
10
 
23
28
 
11
9
55
 
8
9
 
25
30

Operating Conditions
Temperature 0C Max
    Normal
    with Steam
Pressure Bar  
325
250
200
50
375
250
200
70
400
275
200
90
 
If the temperature / pressure parameters fall in the Green area, material selection ca, generally be made without technical evaluation, I they in the Blue area, the performance will also depend upon other factors, such as, type and concentration of the medium, flange condition, thickness selection etc, hence a technical evaluation is recommended. If the parameters are in the open area, an evaluation by Technical Services Dept. of HCL will be necessary.

The data provided here is based on research efforts, field and laboratory application, ideal or prototype conditions and long years of manufacturing experience of the sealing products. Since the actual applications, or installation depends upon number of variables, the data should be used to support any warranty claim if used without consultation of HCL in extreme conditions.
 
       
Aramid/Mineral Aramid./Glass Aramid/Mineral Aramid/Mineral/Synth.
NBR/SBR Buty NBR SBR/NBR
Violet White Black-Grey Yellow
Superior chemical And hydrocarbon resistance High performance resistant to acids High performance, oil resistant Controlled Swell

High loading with excellent mechanical strength & resistance to oil/ alkalies & wide range of chemicals. Offers resistance to acids, alkalies and other aggressive media In addition to superior resistance to gases, water & steam , offers resistance to oil and hydrocarbons under severe operating conditions. Offers controlled swell properities oil & fuels. Excellent self sealing with low surface stress.


 
If the temperature / pressure parameters fall in the Green area, material selection ca, generally be made without technical evaluation, I they in the Blue area, the performance will also depend upon other factors, such as, type and concentration of the medium, flange condition, thickness selection etc, hence a technical evaluation is recommended. If the parameters are in the open area, an evaluation by Technical Services Dept. of HCL will be necessary.

The data provided here is based on research efforts, field and laboratory application, ideal or prototype conditions and long years of manufacturing experience of the sealing products. Since the actual applications, or installation depends upon number of variables, the data should be used to support any warranty claim if used without consultation of HCL in extreme conditions.
 
CHEMICAL RESISTANCE CHART
Air
Water
Steam
Saturated steam
Mid Inorganic acids
Mid Organic acids
Strong acids
Mild Alkalies
Strong Alkalies
Industrial Gases
Synthetic Oils
Vegetable Oils
Animal Oils
Aliphatic Solvents
Aromatic Solvents
Chlorinated Solvents
General Chemicals
Refrigerates
Food & Beverages

Note : R = Recommended
          C = Conditional
          N = Not recommended