Plastic Properties of Polytetrafluoroethylene (PTFE)

Polytetrafluoroethylene (PTFE) shows a remarkable chemical resistance and it is insoluble in all known solvents. It is attacked only by molten alkali metals and by fluorine at high temperatures. PTFE is incombustible and may be used up to 260°C (300°C for short periods). PTFE’s coefficient of friction is extremely low and it shows the effect of self lubrication with constant mechanical properties which makes it particularly suitable for bearings, joints, O-rings, stirring bars, hazardous materials bottle pouers, syringes, crucubles, evaporating dishes etc. PTFE may be shaped by compression and sintering into bottles and beakers where its chemical stability and non-wettability make it suitable for use in extreme circumstances.

Non-sticking PTFE syringes are virtually immune to chemical attack with a working temperature from cryogenic to 260°C.

PTFE Resistance:

Excellent resistance (no attack) to Dilute and Concentrated Acids, Alcohols, Aldehydes, Bases, Esters, Aliphatic, Aromatic and Halogenated Hydrocarbons, ketones, Mineral Oils, Vegetable Oils and Oxidizing Agents.

PTFE Quick Facts:

Maximum Temperature: 572°F 300°C

Minimum Temperature: 392°F -200°C

Autoclavable: Yes

Melting Point: 626°F 330°C

Tensile Strength: 6,240 psi

Hardness: R58

UV Resistance: Excellent



Specific Gravity: 2.2

PTFE Fabrication:
A truly amazing material. The lowest coefficient of friction of any solid. Excellent choice for gaskets, rings, and bearings. Can’t be easily glued or welded. Machines easily when chilled. Available in many forms and shapes. PTFE is virtually impervious to chemical attack.