Low smoke, low toxicity, halogen free, flame retardant thermoplastic compound mainly used in cable sheathing applications but also can be used as cable insulation. This compound presents a high hot pressure performance and a high stress crack resistance which allows it to be used as sheathing of any type of armored, large size cables.

Key Features TP521 has been specially developed to comply with the requirements of BS7655 Section 6 for types LTS1, 2, 3 and 4; EN 50290-2-27 for type HM2 and HD 604 for type HM4. Cables made with TP521 have passed the 3m3 smoke density chamber test to IEC 61034-2.
Application Jacketing, Insulation
LOI (%) 33
Elongation (%) 180
Tensile (psi)
Tensile (MPa) 13
Density (g/cm3) 1.48
Melting Temperature
MFI 6.0
Specific Gravity 1.48
Active Level
Physical Form Pellets
Resin Family
FR Type
Product Type Compound

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We can offer variations of this product to include different additives, colors and varying strengths of catalyst masterbatch. Please contact our technical or commercial staff to discuss in more detail.