Novus Uniflon 51

Novus Uniflon 51 is a superior performance biaxially orientated PTFE sheet material with a silica filler.


Novus Uniflon 51 is a general purpose grade for sealing applications across the whole pH range. It is particularly suitable for use with strong acids (except hydrofluoric acid) and alkalis. Other applications include solvents, fuels, water, steam, and chlorine.

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   2.2g/cc
Tensile Strength ASTM F152 15MPa
Compression ASTM F36 7%
Recovery ASTM F36 40% min
Residual Stress DIN @ 175°C 32MPa
Creep Relaxation ASTM F38 23%
Gas Permeability DIN 3535 <0.01cc/min
Liquid Leakage ASTM F37 0.21ml/hr

Novus Uniflon 51 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.

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