Hecker®
Centellen® W 3831
Preliminary technical information 3.2.831-00;
Sealing Sheet DIN 28091; FA - AN
1 - 0
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.
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.
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

|
Technical data (thickness 2 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 |
|
Compressibility |
10-20 | % | ASTM F 36 J |
|
Recovery |
>40 | % | ASTM F 36 J |
|
Tensile
strength transverse |
>10 | N/mm2 | DIN 52 910 |
|
min. surface pressure smin (Gases) |
N/mm2 | DIN 28 090 | |
|
min. surface
pressure smin
(liquids) |
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 | |
|
Min.
temperature(*) |
-40 | °C | |
|
Max.
operating temperature(*) |
180 | °C | |
|
Max. temperature (temporary)(*) |
250 | °C | |
|
Max. pressure(*) |
50 | bar |
(*) Max. operating temperature and max. pressure should not occur simultaneously !