Construction and Measured Properties

Barium sulphate distinguishes SIGMA 533 from glass- or silica-filled SIGMA materials. Its catalog density is 2.9 g/cm³. Per Flexitallic testing, compressibility is 8%, recovery is 43%, and density is 2.9 g/cm³. For a 1.5 mm thickness, the brochure publishes an ASME m factor of 1.4, a seating stress y of 16 MPa, and an EN 13555 Qmin/0.01 of 31 MPa. ASTM F38 creep relaxation is 33%. These parameters are derived from specific test methods and do not serve as universal assembly criteria.

Applications and Service Conditions

The brochure lists alkalis and specific aqueous hydrofluoric acid solutions below 49%. It is not suitable for molten alkali metals or fluorine gas. HF service requires process-specific engineering validation. The brochure specifies ratings up to 260°C and maximum pressures of 85 bar at 1.5 mm, 80 bar at 2 mm, and 75 bar at 3 mm. These limits must never be combined without referencing a P/T curve.

Comparing Without Assuming Equivalence

The relationship to GYLON 3510, TEALON TF 1580, and top-chem 2006 relates to the filler family. A similar PTFE/baryte formulation does not guarantee identical allowable service conditions. To prepare an engineering assessment, please specify the media, its concentration, flange class, bolt load, and required thickness.

Other technical data sheets to review: Garlock GYLON 3510 and TEADIT TEALON TF 1580. These reflect material construction comparisons.