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Other seals

Gaskets
 
CHETRAMID 15F3
  • high-quality universal seal sheet
  • aramide and inorganic fibres
  • synthetic elastomer binder
  • matrix arrangement
  Dimensions:
Sheets: 1500x1500 mm
Thickness: 0,5; 0,8; 1,0;1,5; 2,0; 3,0; 4,0 mm
  Technical Data:
p: see diagram
t: see diagram
Density: (DIN 28090-2):
1,55 g/cm3
Compression: (ASTM F36):
7 - 15%
Resiliency: (ASTM F36):
> 50%
Sealing effect against nitrogen
(DIN 3535/4):
< 0,1 cm3 / min
Soluble chlorides:
< 150 ppm
 
 
Media resistance:
Test medium, duration of immersion and temperature swelling / increase of density
  acc. to DIN 3754 15 F3
Water, 5h, 100°C 10 < 3
Sulphuric acid, density 1.56 (65%), 48 h, ambience temperature 20 < 3
Soda lye, density 1.28 (25%), 48 h, ambience temperature 15 < 7
Solvent "Toluol" (commercial quality) 5 h, ambience temperature 35 < 20
ASTM - ÖL No3, 5h, 150°C 15 / 20 < 12
 
Approvals / Releases:
DVGW (90-01) c807 KTW; KTW (1.3.13); HTB (DIN 3374)

Main scope of application:
 
  • universal - industrial applications;
    flanges, pipelines, equipment, motors, pumps, compressors a.m.
  • in varying media:
  • gear-hydraulic-motor-oils, fuels, solvents, hydrocarbons, coolants, ester, drinking water, food industry, lacquer raw materials, many alkalide solutions and acids (except concentrated nitric acid and hydrofluoric acid; ref. to "media resistance"), also high-purity products (such as vitamins e.g.)
  Special advantages and values for users:
 
  • easy handling
  • universal possibilities for application - standardization
  • flexible in case of unevenness by excellent resiliency
  • antiblocking coating on both sides

   
CHETRATEX®ePTFE
  • 100 % ePTFE sheets
  • expanded material of pure virgin PTFE in molecular-oriented fibre structure
  • microfibres multiaxially arranged
  Dimensions:
Sheets: 1500x1500 mm
Density: 0,5; 1,0; 1,5; 2,0; 3,0; 4,0; 5,0; 6,0 mm

Technical Data:
p: vacuum up to200 bar
t: 240° C...+280° C
pH range: 0-14

Physical qualities:
(acc. to ASTM-F-36/-37-B)
Leakage rate (4 bar nitrogen): 0,15 ml/h
Resiliency: 16%
Compression: 67%

Approvals/ Releases/ Correspondences:
corresponds with FDA 21 CFR 177.1550

Main scope of application:
as flange seal / cover seal
 
  • chemical industry
  • pharmaceutics
  • petrochemistry
  • food processing industry (material is physiologically safe)
  • paper industry
  • power stations
  • shipbuilding industry/ dockyards
  • other industrial applications
  Special advantages and values for users:
 
  • easy handling (cutting to size instead of punching)
  • easy installation - elastic, flexible, easily compressible
  • compensative ability with unevenness - coarse or damaged sealing faces
  • this ePTFE material is free of cold flow to a large extent (in contrast to conventional PTFE)

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