PRODUCT TYPE: PTFE Jointing & Sealing

Novus Uniflon 53 is a high performance biaxially orientated PTFE sheet material with a barium sulphate filler.


Novus Uniflon 53 is a general purpose grade for sealing applications across the whole pH range. It is suitable for use with hydrofluoric acid, but not pure liquid hydrogen fluoride. It can also be used with alkalis, solvents, fuels, water, steam and chlorine.

Temperature / Pressure

  • Maximum recommended service temperature 260°C.
  • Maximum recommended operating pressure 85 bar (1235psi).

The maximum temperature and pressure cannot necessarily be used simultaneously.

Approvals / Compliance

  • Conforms with FDA21 CFR 177.1550 regulations.


Thickness range:

  • 0.75mm to 3.0mm

Standard sheet sizes:

  • 1.0m x 1.0m
  • 1.5m x 1.0m
  • 2.0m x 1.0m
  • 1.5m x 1.5m
  • 2.0m x 1.5m
  • 2.0m x 2.0m

Typical Physical Properties

Thickness 1.5mm
Density 3.0g/cc
Tensile Strength ASTM F152 14MPa
Compression ASTM F36 5%
Recovery ASTM F36 40% min
Residual Stress DIN @ 175° C
Creep Relaxation
ASTM F38 21%
Gas PermeabilityDIN 3535 <0.01cc/min
Liquid LeakageASTM F37 0.22ml/hr