Novus Uniflon 53

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.


Standard sheet sizes (m): 2.0 x 2.0
2.0 x 1.5
2.0 x 1.0
1.5 x 1.5
1.5 x 1.0
1.0 x 1.0
Thickness range (mm): 0.75 to 3.0

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 30MPa
Creep Relaxation ASTM F38 21%
Gas Permeability DIN 3535 <0.01cc/min
Liquid Leakage ASTM F37 0.22ml/hr

Novus Uniflon 53 Pressure/Temperature Limits

1. Suitable subject to chemical compatibility.
2. Suitable in some cases but check your application requirements with Flexitallic.
3. Contact the Technical Team for applicatis on with higher temperatures and pressures. Applicable to 1.5mm and below.

The operating temperature of non-asbestos sheet material is related to the thickness of materials selected. Thinner materials give better temperature and pressure properties.

Need some information? Call us today: 01925 825552