Top-Chem 2006 — Modified PTFE Gasket (Barium-sulfate filled)
Top-Chem 2006 is a pigment-free, barium-sulfate filled PTFE gasket material engineered for superior performance in strongly alkaline media. It offers low cold-flow, good mechanical properties at medium/low temperatures and is available in standard sheet sizes and cut-to-size gaskets.
Description
Top-Chem 2006 is a modified PTFE sealing sheet based on PTFE filled with barium sulfate. The material is formulated to deliver PTFE’s excellent chemical inertness while improving mechanical performance and resistance to cold-flow in alkaline service. It is pigment-free and particularly suited for chemical industry applications where alkaline media and gentle flange loading are common.
Key benefits
- Excellent resistance in strongly alkaline media — optimized formulation for alkali service.
- Reduced cold-flow / improved dimensional stability compared with virgin PTFE — helps maintain bolt load and long-term tightness.
- Pigment-free and FDA-compatible grades available for food and pharmaceutical uses.
- Good mechanical behaviour at medium/low temperatures and loads, suitable for a wide range of process applications.
Typical applications
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Chemical process plants handling alkaline media (pH-high environments).
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Glass-lined reactors, plastic/FRP flanges and other delicate flange faces where low-stress sealing is required.
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Food, beverage and pharmaceutical process lines (select FDA-conforming grades).
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General chemical engineering applications requiring long-term tightness and low maintenance.
Why choose TOP CHEM modified PTFE
TOP-CHEM® 2006 is specifically engineered for strongly alkaline process environments where conventional PTFE can suffer from excessive cold-flow or reduced mechanical performance. By using a barium-sulfate filled PTFE base, Top-Chem 2006 maintains PTFE’s chemical inertness while significantly improving dimensional stability and sealing reliability under repeated thermal and mechanical cycles. Choose Top-Chem 2006 when you need a pigment-free, FDA-compatible PTFE gasket material that delivers long-term tightness, lower maintenance and proven alkali resistance in demanding chemical applications.
Typical technical specifications
| Basis composition | PTFE filled with barium sulfate. | Sheet size | 1500×1500 mm | |||
| Color | White/ pigment-free | Thickness | 1.5 mm,2.0 mm,3.0 mm | |||
| Certificates | Available certificates and approvals (grade-dependent) typically include: FDA conformity, BAM / DVGW / TA-Luft and other industry recognitions — please request the specific certificate copies for the grade and batch you order. | 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 F36M18 | % | 40 |
| Stress relaxation (DIN 52913) | 30 MPa, 16h / 150℃ | MPa | 18MPa |
| KLINGER cold/hot compression (50 MPa) | thickness decrease at 23℃ | % | 12 |
| KLINGER cold/hot compression (50 MPa) | thickness decrease at 150℃ | % | 41 |
| Tightness | DIN 28090-2 | mg/(s × m) | 0.01 |
| Density | g/cm³ | 3.0 |
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).
