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COMPRESSED NON-ASBESTOS FIBER (CNAF)

CUT GASKET

Standard sizes available from 1/2" to 60"
Pressure class             :   LBS 150,300 & 600
Conforming to ASME   : B16.21 , B16.47 Series A & B
DIN                              : PN 10, PN 15, PN 25, PN 32, PN 40, PN 60, PN 65, PN 80, PN 100, PN 125

AWWA                         : Table C & D

Non- standard gaskets in all sizes, types and shapes
Materials                     : Compressed Non- Asbestos Fiber (CNAF); Aramid Fiber, Carbon Fiber, Glass Fiber
                                   : Conforms to BS 7531 Grade X & Y

 

SHEETS MATERIAL

 

Technical Specifications:

Material composition – Made from glass fibre with NBR elastomers
Thickness – 0.25 to 6.0 mm
Max. peak temperature - 440ºC
Max. continuous temperature - 250º C
Specification compliance – BS 7531 Grade X

Availability: In sheet form and cut gasket form. Sheet sizes of 2meter x 1.5meter

 

CNAF SHEETS & CUT GASKETS

BS 7531 Grade - X

Applications                : General purpose material with excellent Chemical resistance and mechanical properties. Suitable for use with air, steam, oil, fuel and gases for high media resistance and high stress conditions.

Composition                : Made from Glass Fiber with NBR binders

Thickness                    : 0.25 to 6.0mm

Max. Peak Temp          : 440°C

Max. Continuous Temp                : 350°C

Max. Operating Pressure            : 150 bar

BS 7531 Grade - Y

Applications                : Suitable for oil resistant gasket material for medium to higher loading, good resistance to water gases, oils and fuels. A standard sealing material used in compressors, pipelines, apparatus, transmission, gas meters and internal combustion engines.

Composition                                  : Made from Aramid Fiber, mineral fiber      & inorganic fillers bonded with Synthetic NBR binders

Thickness                                    : 0.25 to 6.0mm

Max. Peak Temp                          : 400°C

Max. Continuous Temp                : 250°C

Max. Operating Pressure             : 150 bar

 

Specification Compliance : BS 7531 Grade X

The following information applies to material Thickness 1 .50mm

 
 PROERTIES  TEST METHOD
  UNIT  SPECIFIED VALUE
 
  1. Density
    2.   Tensile Strength
    3.   Compressibility
    4.   Recovery
    5.   Resistance to oil & water
         a) IN ASTM OIL No.3
           150°C x 5 hrs
             Increase in Thickness
             Increase in Mass
       b) In FUEL B (R.T X 5hrs)
            Increase in Mass
             c) In Water 100°C x 5 hrs
                Increase in Mass
               Increase in Thickness
6.   Gas Permeability
7.   Stress Relaxation Test
       40 mpa @ 300°C x 16 hrs
8.   Flexibility

ASTM F 1315
ASTM F 152
BS 7531
ASTM F 36A

BS 7531
ASTM F 146

ASTM F 146
ASTM F 146

ASTM F 146
BS 7531
BS 7531

BS 7531

BS 7531 

gm/cm3 N/mm2
%
%

%
%

%
%

%
%
ml/min

Mpa

- 		  

1.65-2.00
7.0 min.
6.0 min.
50 min.

10.0 max.
15.0 max.

15.0 max
10.0 max.

15.0 max.
15.0 max.
1.0 max.

25.0 min.

No Visual sign of cracks

 

Specification Compliance : BS 7531 Grade Y

The following information applies to material Thickness 1.50mm


 
 PROERTIES  TEST METHOD
  UNIT  SPECIFIED VALUE
 
  1. Compressibility
    2.   Resistance to oil & water
         a) IN ASTM OIL No.3
           150°C x 5 hrs
             Increase in Thickness
            
       b) In Water 100°C x 5 hrs
           Increase in Thickness
    3.   Gas Permeability
    4.   Stress Relaxation Test
           40 mpa @ 300°C x 16 hrs

    5.   Flexibility

 

BS 7531

BS 7531

BS 7531

BS 7531

BS 7531

BS 7531

 

%

%

%

ml/min

Mpa

-		  

6.0 min.

10.0 max.

15.0 max.

1.0 max.

25.0 min.

No Visual sign of cracks