The Specific Role of Glass Microspheres

Microspheres embedded in the PTFE alter compressibility and surface conformability. Consequently, TF 1570 performs differently than virgin PTFE sheet or densely filled PTFE. TEADIT technical documentation indicates significantly higher compression ranges than those of TF 1580. Relaxation, recovery, and minimum seating stress must all be carefully factored in.

Distinguishing TF 1570 from TF 1580

These two items in the TEALON product line have similar model designations, yet they use different fillers. TF 1570 incorporates glass microspheres, whereas TF 1580 utilizes barium sulphate. Substituting between these grades can alter bolt-load behaviour and contact pressure. The engineering decision must evaluate actual assembly conditions rather than relying solely on chemical resistance charts.

Specifying an Alternative Material

Clearly define the flange material, flange rigidity, sealing face finish, gasket dimensions, and bolting specification. Identify the process media, including any chemical concentrations, operating temperatures, and pressures. Then, cross-reference official manufacturer datasheets to compare compressibility, recovery, and creep relaxation values for the candidate materials.

To compare gasket constructions: TEADIT TF 1510 and KLINGER top-chem 2003. The mere presence of microspheres does not imply identical third-party approvals, mechanical properties, or operating limits.