Top-Chem 2003 — Modified PTFE Gasket (filled with hollow glass-microspheres)
Top-Chem 2003 is a PTFE gasket sheet filled with hollow glass-microspheres, engineered for high compressibility and reliable sealing at low surface loads. Excellent chemical resistance for acidic/alkaline services; available in food-grade/FDA conforming variants.
Description
Top-Chem 2003 is a modified PTFE sealing material filled with hollow glass-microspheres to combine PTFE’s chemical inertness with improved compressibility and low cold-flow behaviour. Its formulation gives excellent tightness even at low bolt loads or on delicate flange faces, making it particularly suitable for glass-lined reactors, plastic/FRP flanges and other sensitive assemblies.
Key benefits
- High compressibility & adaptability — achieves reliable sealing under low surface pressure and on non-ideal flange faces.
- Excellent chemical resistance — suitable for strongly acidic and alkaline media.
- Fire-safe certified — Top-Chem 2000 is the only PTFE gasket material awarded a Fire-Safe certificate (improves safety in fire scenarios).
- High mechanical strength — performs reliably at high surface pressures and elevated temperatures.
- FDA conformity available — suitable grades for food / pharmaceutical contact where required.
Typical applications
-
Glass-lined reactors and vessels (protecting fragile linings).
-
Low-bolt or delicate flange assemblies (plastic/FRP/soft flanges).
-
Chemical process lines handling strong acids/alkalis.
-
Food, pharmaceutical and semiconductor where FDA/EU conformity is required (select grades).
Why choose TOP CHEM modified PTFE
TOP-CHEM® 2003 offers a unique combination of very high compressibility and excellent chemical resistance thanks to its hollow glass-microsphere filler. That means reliable sealing even where bolt loads are limited or flange faces are delicate — without sacrificing PTFE’s chemical inertness. For applications where flange integrity, low retightening frequency and compatibility with aggressive acids/alkalis are paramount, Top-Chem 2003 delivers dependable long-term tightness and reduced maintenance.
Typical technical specifications
| Basis composition | PTFE filled with hollow glass-microspheres. | Sheet size | 1500×1500 mm | |||
| Color | White | Thickness | 1.5 mm,2.0 mm,3.0 mm | |||
| Certificates | Top-Chem 2003 is documented with multiple recognitions across suppliers and distributors — common listed approvals include BAM / DIN-DVGW / TA-Luft / DNV GL / FDA conformity / EU-1935/2004 depending on grade and vendor. Always request the certificate copy for the specific batch/grade supplied. | Tolerances Thickness:±10% Length:±50mm Width:±50mm |
||||
| Industry | ||||||
| General industry/Chemical/Oil&Gas/Energy/Infrastructure/Pulp&Paper/ Marine/Automotive/Food&Beverage/Pharma |
||||||
| TECHNICAL DATA-Typical values for a thickness of 2.0 mm | ||||||
| Compressibility | ASTM F36M | % | 18 |
|---|---|---|---|
| Recovery | ASTM F36M18 | % | 35 |
| Stress relaxation (DIN 52913) | 30 MPa, 16h / 150℃ | MPa | 13MPa |
| KLINGER cold/hot compression (50 MPa) | thickness decrease at 23℃ | % | 10 |
| KLINGER cold/hot compression (50 MPa) | thickness decrease at 150℃ | % | 39 |
| Tightness | DIN 28090-2 | mg/(s × m) | 0.01 |
| Density | g/cm³ | 1.7 |
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).
