Hecker® Centellen® W 3831

Preliminary technical information 3.2.831-00; Sealing Sheet DIN 28091;  FA - AN 1 - 0

Construction

Hecker® Centellen® W 3831 is produced on calenders. It consists of Aramid and other fibers, mineral reinforcement-materials that is
bound by a NBR-rubber. The plates receive an antiadhesive surface-coating with a low coating thickness during the production.
The chemical qualities are not changed hereby.

Technical qualities

Hecker® Centellen® W 3831 is a less expensive gasket-quality for thermal sealing with low strain. Because of the flexibility of the material,
the sheet is very good for the use in locations with very high leakage demands combined with low surface pressure. The material is resistant
against oils and hydrocarbons as well as against aqueous medias and refrigerants. Due to its gas permeability it can be employeed to seal gases.

Chemical resistance

Resistant against:
Hydrocarbons like oils or solvents
Alcohols, glykols, aqueous solutions

Not resistant against
Strong lyes and acids

Swelling based on DIN 3754
in ASTM 3-oil:                         calculation in process
in Fuel B:                                calculation in process

in water:                                 calculation in process

Technical data:
Visual apperance:                    red/red
Antiadhesive-coating:              OBR2
Delivery-format:                       1000 x 1500 mm, 1500 x 1500 mm, 1500 x 3000 mm
Standard-thickness:                  0,5 up to 3 mm

Value Unit Standard
Density 1,7 g/cm3 DIN 28 090 part 2
Cold heading value KSW 7-15 % DIN 28 090 part 2
Cold resilience value KRW ca.5 % DIN 28 090 part 2
Warm setting value WSW <50 % DIN 28 090 part 2
Warm resilience value WRW 1-2 % DIN 28 090 part 2
spez. Leakage rate l <0,01 mg/(s*m) DIN 28 090 part 2
Gas-tightness <0,1 cm3/min DIN3754
Compressive strength 16 h/175 °C, sdE/16 20 N/mm2 DIN 52913
10-20 % ASTM F 36 J
>40 % ASTM F 36 J
>10 N/mm2 DIN 52 910
  N/mm2 DIN 28 090
  N/mm2 DIN 28 090
max. surface pressure sBo (23 °C)   N/mm2 DIN 28 090
max. surface pressure sBo (100 °C)   N/mm2 DIN 28 090
-40 °C  
180 °C  
250 °C  
50 bar  

 (*) Max. operating temperature and max. pressure should not occur simultaneously !