PTFE HOSE NATURAL

Description / Design
PTFE is of outstanding importance among fluoropolymers on account of its exceptional chemical, thermal and dielectric properties. These properties allow for versatile solutions to problems in the chemical and the medical sector as well as in the food industry. On account of the stable compound of fluorine and carbon atoms, and the virtually complete shielding of the carbon chain by the fluorine atoms, PTFE has an almost universal chemical resistance.
Chemical reactions between PTFE and other materials are limited to a few exceptions: Alkali metals in the molten or dissolved state react with the polymer, with a brown colouring effect. Furthermore, elementary fluorine and chlorine trifluoride influence PTFE at higher temperatures and pressures.
The properties mentioned below contribute decisively to the upward trend of the application of PTFE hoses in almost all areas of industry, through to medical, pharmaceutical and biotechnology and also in the food industry.

Technical data
The PTFE hoses are suitable for temperatures from -190°C to + 260°C.

Working Pressure
In the case of temperatures above 20 °C, the pressures recorded in the chart have to be multiplied by the following reduction factors.

Static-dissipative version
For cases of the industrial application, at the risk of a static charge, a black, antistatic version is available on request.

Standard dimensions
Metric hose dimensions ranging from 1 x 2 to 30 x 33 mm (Inner- x outer diameter).
The standard dimensions are metric - Special sizes available on request.

Pharmacy / Biotechnology
Due to the high requirements in the case of these fields of applications, the product is manufactured exclusively from a specific raw material that corresponds to the FDA regulation 21 CFR 177.1550.

Tests for plastics were performed, pursuant to USP Class VI - 121°C:
USP <87> Biological Reactivity - In VITRO
USP <88> Biological Reactivity - In VIVO
as well as pursuant to the ISO-Standards 10993-5, -6, -10 and -11.

Furthermore, an extractables study was conducted.
A corresponding validation package is available on request from TECNO PLAST.

Tolerances for standard dimensions
Inner diameter (mm) ± tolerance (mm) 
3 up to 5 ± 0.2
higher than 5 up to 7 ± 0.25
higher than 7 up to 10 ± 0.3
higher than 10 up to 15 ± 0.35
higher than 15 up to 20 ± 0,4
Wall thickness (mm) ± tolerance (mm) 
0.5 up to 1.0 ± 0.15
higher than 1.0 up to 2.0 ± 0.2
higher than 2.0 up to 4.0 ± 0.4
higher than 4.0 up to 6.0 ± 0.5
Restricted tolerances are available on request. (e.g. in cases in which the PTFE-hose is fitted with compressed air fittings)