CHOOSE PRODUCTS

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.

tealon teste

Thermo-Cycling Leak Test

Temperature cycles from 30ºC to 200ºC, with seating stress of 5000psi and using a gasket thickness of 1/8".

graftealon

Thermo-Cycling Leak Test Condition

Operating ParametersTF1570TF1580TF1590
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 PropertyType of TestTF1570TF1580TF1590
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.