TF1590 - PTFE GASKET SHEET WITH SILICA FILLER
Tealon TF1590 | Fawn
Tealon TF1590 (Fawn) is filled with silica and meets a wide range of aplications. It is suitable for general service, strong acids and moderate caustic solutions. It meets FDA conformance for service within food and pharmaceutical applications. TF1590 has easily passed the Hot Compression Test with outstanding results.
Approvals: DVGW — TA-Luft — FDA — Chlorine Institute — Blow-Out — ABS — EU 1935/2004 — BAM — W270 — Air Liquide
Hot Compression Test
This performance test measures the behavior of rPTFE and PTFE gaskets in a real world environment. The chart below shows a comparison between conventionally skived PTFE and Tealon. The gaskets we tested simulated a real world application including thermo-cycling. The skived PTFE gasket showed a very high leak rate, losing 60% of its initial pressure by the end of the test.
The Tealon gasket lost only 6% of its initial pressure by the end of the test and showed a leak 10 times less than that of the skived PTFE gasket. The pictures below, show the gaskets after the test and exhibit the dimensional stability of Tealon as compared to the noticeable creep of the skived PTFE gasket.
Thermo-Cycling Leak Test
Temperature cycles from 30ºC to 200ºC, with seating stress of 5000psi and using a gasket thickness of 1/8".
Thermo-Cycling Leak Test Condition
| Operating Parameters | TF1570 | TF1580 | TF1590 | |
|---|---|---|---|---|
| Temperature | -268 to 260 ºC | |||
| Max. Pressure | 55 bar (800 psig) | 83 bar (1200 psig) | 83 bar (1200 psig) | |
| Pressure x Temperature - bar x ºC | Thickness 1/16" | 12.000 | ||
| Thickness 1/8" | 8.600 | |||
| Sheet Size | 1500 mm x 1500 mm | |||
| Availability | 0,5 mm up to 3,2 mm | |||
| Composition | PTFE with glass microspheres | PTFE with barium sulfate | PTFE with silica | |
| Physical Property | Type of Test | TF1570 | TF1580 | TF1590 |
|---|---|---|---|---|
| Color | Blue | White | Fawn | |
| Sealability (ml/h) | ASTM F 37A | 0.12 | 0.04 | 0.20 |
| Creep Relaxation (%) | ASTM F 38 | 40 | 24 | 18 |
| Compressibility(%) | ASTM F 36M | 25-40 | 4-10 | 5-15 |
| Recovery Min. (%) | ASTM F 36M | 30 | 40 | 40 |
| Tensile Strength (MPa) | ASTM F 152 | 14 | 14 | 14 |
| "m" and "y" factor | |||
|---|---|---|---|
| Product | Thickness (mm) |
"m" | "y" (psi) |
| TF1570 | 1.5 | 2 | 1,500 |
| 3 | 2 | 1,500 | |
| TF1580 | 1.5 | 2 | 1,800 |
| 3 | 2 | 1,500 | |
| TF1590 | 1.5 | 4.4 | 2,500 |
| 3 | 3.5 | 2,000 | |
ASTM tests are based on 1/32" sheet thickness.