TOP-CHEM Modified PTFE Gasket — With inorganic fillers
Top-chem 2005 is a PTFE-based filled gasket material engineered for outstanding chemical resistance in strong acidic environments. The material combines the chemical inertness of PTFE with inorganic fillers to reduce cold flow and deliver good mechanical performance at moderate temperatures. Suitable for demanding chemical-industry applications where reliable, contamination-free sealing is required.
Description
Top-chem 2005 is a PTFE-based filled gasket material engineered for outstanding chemical resistance in strong acidic environments. The material combines the chemical inertness of PTFE with inorganic fillers to reduce cold flow and deliver good mechanical performance at moderate temperatures. Suitable for demanding chemical-industry applications where reliable, contamination-free sealing is required.
Key benefits
- Excellent resistance to strong acids and many aggressive chemicals.
- Reduced cold-flow compared with virgin PTFE thanks to inorganic fillers.
- Good mechanical strength at medium temperatures.
- Meets FDA conformity for component materials (where required).
- Low thickness change under moderate service conditions — reliable sealing over time.
Typical applications
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Chemical processing plants (acid/alkali service).
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Glass-lined reactors and vessels.
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Flanges on plastic/FRP lines and specialty process equipment.
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Pharmaceutical and food-grade service (use appropriate certified grades).
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Filters, housings, washers and custom die-cut gaskets for retrofit work.
Why choose TOP CHEM modified PTFE
Top-chem 2005 is selected where strong chemical resistance must be paired with improved dimensional stability versus virgin PTFE. The filled PTFE formulation minimizes cold flow, reduces retightening cycles, and gives predictable sealing performance in corrosive and acidic services.
Typical technical specifications
| Basis composition | PTFE filled gasket material with inorganic fillers | Sheet size | 1500×1500 mm | |||
| Color | Orange | Thickness | 1.5 mm,2.0 mm,3.0 mm | |||
| Certificates | Conforms to the regulation(EU), No.1935/2004(incl.10/2011), FDA conformity(components of KLINGER®top-chem complies with the FDA requirements) |
Tolerances Thickness:±10% Length:±50mm Width:±50mm |
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| Industry | ||||||
| General industry/Chemical/Oil&Gas/Energy/Infrastructure/Pulp&Paper/ Marine/Automotive/Food&Beverage/Pharma |
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| TECHNICAL DATA-Typical values for a thickness of 2.0 mm | ||||||
| Compressibility | ASTM F36M | % | 4 |
|---|---|---|---|
| Recovery | ASTM F36M | % | 40 |
| Stress relaxation (DIN 52913) | 30 MPa, 16h / 150℃ | MPa | 30 MPa, 16 h / 150 °C: 25 MPa |
| KLINGER cold/hot compression (50 MPa) | thickness decrease at 23℃ | % | 5 |
| KLINGER cold/hot compression (50 MPa) | thickness decrease at 150℃ | % | 35 |
| Tightness | DIN 28090-2 | mg/(s × m) | 0.02 |
| Density | g/cm³ | 2.2 |
Applications & industries
- Chemical processing & corrosive service lines (acid/alkali tanks).
- Glass-lined reactors and vessels (sealing against fragile linings).
- Pharmaceutical & food (FDA/EU-compliant grades available).
- Semiconductor & wet-process equipment (low particle, clean packaging).
