APG’s top-chem 2000 is a universal heavy-duty gasket material which offers exceptional performance in applications with high mechanical requirements at high temperatures. It is the only PTFE gasket material with a Fire-Safe Certificate. Use APG’s top-chem 2000 in strongly acidic and alkaline applications as well as in steam and oxygen. Suitable for an extremely wide range of applications in the chemical and petrochemical industry, as well as in the ship building industry for the transport of chemicals. This material also meets FDA conformity.
Features
Resistant to creep and cold flow
Consistent material composition
High retention of the bolt load
Superior chemical resistance
No ageing of the material
Applications
FDA Applications
Fragile piping systems
Certifications
DIN-DVGW
DIN-DVGW W 270
Oxygen tested
KTW-Guideline
DNV GL
Product Specifications
Typical Values Refer to 1/16'' Thick Material Unless Noted
| Compressibility ASTM F36 M | 4% |
| Recovery ASTM F36 M | 50% |
| Stress relaxation DIN 52913 | |
| 28 MPa | |
| 2 50 MPa, 16h/260°C | 36 MPa |
| KLINGER Cold/Hot Compression Test 50 MPa | |
| 1 Thickness Decreases 73°F (23°C) | 5% |
| 2 Thickness Decreases 500°F (260°C) | 11% |
| Tightness DIN 28090-2 | 0.08 mg/s x m |
| Thickness/Weight Increase | |
| 1 H2 SO4, 100%, 18 h/23°C | 1/1% |
| 2 HNO3, 100%, 18 h/23°C | 1/2% |
| 3 NaOH, 100%, 72 h/110°C | 1/3% |
| Density | 2.5 g/cm³ |
| Average surface resistance ρO | 6.9x10E12 Ω |
| Average specific volume resistance ρD | 2.2x10E12 Ω cm |
| Average dielectic strength Ed | 3.6 kV/mm |
| Average power factor 50 Hz | 0.166 tan δ |
| Average dielectric coefficient 50 Hz | 10.6 ε r |
| Thermal conductivity λ | 0.60 W/mK |
| Color | Grey |
Pressure/Temperature Graphs
The pressure/temperature graphs shown are the most current method of determining the suitability of a gasket material in a known environment. However, chemical compatibility must also be considered.
pT diagram for thickness 2.0mm:
IIn area 1 the gasket material is suitable using common installment practices subject to chemical compatibility
IIn area 2 appropriate measures are necessary for installation of the gasket to ensure maximum performance.
IIn area 3 do not install gaskets in these applications without first contacting APG for technical support service.
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