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TESNIT® Compressed Gasket Materials - High Performance Line

BAU 2000

Environment friendly gasket material with specially balanced sealing, thermal, chemical and mechanical properties allows universal application.

BAU 2000 is a superior fiber gasket material composed of aramid fibers, fillers and elastomeric binders. With a well-considered selection of ingredients significant improvements in its sealing and thermal properties and chemical resistance have been achieved. Moreover, the new material is also free of harmful nitrosoamines (certified by MRPRA) and fibers which are hazardous to human health. Additionally, when this material is subjected to higher temperatures, no significant emission of hazardous degradation products has been detected. With better sealability an important decrease of fugitive emission levels has been reached. The new material has also very good creep-relaxation properties and is in compliance with DIN 28091-2 and BS 7531 Grade X requirements.


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  • Properties and application
  • Dimensions
  • Technical data
  • Diagram
  • Chemical Resistance

Properties and application

BAU 2000 serves as a high-quality universal gasket material which can be applied for general use at a higher pressure, temperature and surface stress.
BAU 2000 combines high-torque retention, chemical properties and sealability, enabling low maintenance costs and high joint safety. BAU 2000 is very suitable for the sealing of oils, fuels, gases, Freons, solvents, non-aggressive chemicals and many other media. Due to its carefully selected composition BAU 2000 can be also used in food industry and in contact with drinking water (also at high temperatures). Special surface treatment provides low adhesion of gasket on flange surfaces. BAU 2000 is suitable for demanding applications in machinery, pumps, pipelines, radiators, boilers and many different flanged joints.

Basis

Composition

Aramide fibres, NBR

DIN 28091-2

FA-A1-0

Colour

Greenish blue / Greenish Blue

Approvals applied for

BAM, DIN-DVGW (DIN 3535/6)HTB (DVGW VP 401), TARC/MRPRA

Surface treatment

The standard version has a non-stick top and bottom layer. Additional surface treatment is generally unnecessary. Special treatment with graphite, silicone or PTFE on one or both sides is available on request.

Dimensions of standard sheet

 

Sheet size

mm

1000x1500, 1500x1500, 3000x1500, 4500x1500

Thickness

mm

0.5, 0.8, 1.0, 1.5, 2.0, 3.0


other dimensions and thicknesses on request

Technical data

Typical values for a thickness of 2 mm

Density

DIN 28090-2

g/cm3

1,6 – 1,8

Compressibility

ASTM F 36/J

%

6 – 9

Recovery

ASTM F/36/J

%

› 55

Tensile strength

DIN 52910

N/mm2

≈ 12

Stress resistance

DIN 52913

16h, 300°C, 50N/mm2

N/mm2

≈ 28

16h, 175°C, 50N/mm2

N/mm2

≈ 33

Thickness increase

ASTM F 146

Oil IRM 903, 5h, 150°C

%

≤ 5

ASTM Fuel B, 5h, 23°C

%

≤ 5

Specific Leak Rate

DIN 3535/6

mg/sm

≈ 0,03

Compression modulus

DIN 28090-2

At room temperature: εKSW

%

6,5 – 9,4

At elavated temperature: εWSW/200°C

%

9,0 –13,0

Percentage creep relaxation

DIN 28090-2

At room temperature: εKRW

%

› 3,5

At elavated temperature: εWRW/200°C

%

≈ 1,4

Recovery R

DIN 28090-2

mm

≈ 0,026

Max. operating conditions

Peak temperature

°C/F

400

Continuous temperature

°C/F

280

- with steam

°C/F

200

Pressure

bar/psi

140

P-T diagram

 

 

General suitability using common installation practices under the condition of chemical compatibility.

Max. performance is ensured through appropriate measures for joint design and gasket installation. Consultation is recommended.

Limited application area - Technical consultation is mandatory.

 

The Pressure - Temperature charts are the most current method of determining the suitability of a gasket material in a known application. Maximum figures for temperature and pressure can be misleading. Max. temperature and max. pressure represent maximum values and should not be used simultaneously. They are given only for guidance, since this max. values depend not only on the type of gasket material but also on the assembly conditions. Use the pressure and temperature graphs to check suitability of chosen gasket material for your application (combination of pressure and temperature).

σ BO diagram

This diagram describes characteristic values of gasket materials for static seal for use in flanged applications. Given the wide range of gasket applications, these values should merely be considered as a means of assembling the sealing behaviour of gasket under sevice condition. Sigma diagram shows you maximal allowed surface stress (maximum in service compressive stress) on gasket by operating service temperature for different material thickness.

Acetamide Ethyl acetate Oxalic acid
Acetic acid 10% Ethyl alcohol Oxygen
Acetic acid 100% Ethyl chloride Palmitic acid
Acetic ester Ethylene Pentane
Acetone Ethylene glycol Perchloroethylene
Acetylene Formaldehyde Phenol
Adipic acid Formic acid 10% Phosphoric acid
Air Formic acid 85% Potassium dichromate
Alum Freon 12 Potassium acetate
Aluminium acetate Freon 22 Potassium bicarbonate
Aluminium chlorate Fuel oil Potassium carbonate
Aluminium chloride Gasoline Potassium chloride
Ammonia Glycerin Potassium hydroxide
Ammonium bicarbonate Heptane Potassium iodide
Ammonium chloride Hydraulic oil (Mineral) Potassium nitrate
Ammonium hydroxide Hydraulic oil (type glycol) Potassium permanganate
Amyl acetate Hydraulic oil (type phosphate esther) Propane
Aniline Hydrazine Pyridine
Asphalt Hydrochloric acid 20% R134a
Barium chloride Hydrochloric acid 36% Salicylic acid
Benzene Hydrofluoric acid 10% Silicone oil
Benzoic acid Hydrofluoric acid 40% Soap
Borax Hydrogen Sodium aluminate
Boric acid Isobutane Sodium bicarbonate
Butane Isopropyl alcohol Sodium bisulphite
Butyl alcohol Kerosene Sodium carbonate
Butyric acid Lead acetate Sodium chloride
Calcium chloride Lead arsenate Sodium cyanide
Calcium hydroxide Magnesium sulphate Sodium hydroxide
Carbon bisulphide Malic acid Sodium sulphate
Carbon dioxide Methane Sodium sulphite
Chlorine, dry Methanol Starch
Chlorine, wet Methyl chloride Steam
Chloroform Methyl ethyl ketone Stearic acid
Chromic acid Methylene dichloride Sugar
Citric acid Milk Sulfuric acid 20%
Copper acetate Mineral oil type ASTM 1 Sulfuric acid 96%
Creosote Naphtha Tar
Cresol Nitric acid 20% Tartaric acid
Cyclohexanol Nitric acid 40% Toluene
Cyclohexanone Nitric acid 96% Transformer oil
Decalin Nitrobenzene Trichloroethylene
Dibenzylether Nitrogen Water
Dimethyl formamide Octane White spirit
Dowtherm Oleic acid Xylene
Ethane Oleum 

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