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Expanded PTFE Joint Sealant :
Service
Limits
ph
range: 0-14
Temperature Limits:
-260~ + 260
℃(-500/+500°F)
Pressure Limit: 20Mpa
(or 2900 psi; or 200kgf/cm2)
Physical Properties
Material: 100% PTFE, soft and
excellent elasticity.
Density: 0.7~0.8g./cm3 (43~49.5lbs./cu. ft.3)
Elongation: 20%
Matrix Tensile Strength: 30Mpa (4260 psi)
Creep Relaxation (ASTM F38): 51%
Sealablity (ASTM F 37A): 0.1 ml/hr.
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Description
Expanded PTFE joint tape is a multi-purpose gasket tape
manufactured from 100% expanded PTFE fluorocarbon material,
supplied as a continuous low density tape with a
self-adhesive backing strip. It is soft and spongy,
permitting it to conform easily to all surface
irregularities and to compress to a thin ribbon under
pressure.
Application
Expanded PTFE joint tape is recommended as a gasket tape in
steel, glass-lined, PVC and fiberglass pipe flanges, fume
ducts, concrete lids, heat exchangers, fiber glass
reinforced plastic vessels, pump housing flanges, steam
vessel flanges, manhole and manhole covers, ceramic joints,
ventilation ducts, hydraulic and pneumatic systems, water
supply systems and turbine cases.
Chemical Resistance
Because Expanded PTFE
joint tape is manufactured from 100% PTFE, it is an inert
material which can be used in many applications against
corrosive environments, except molten alkali metals and
elemental fluorine. 24B will not contaminate media and can
be used in food and drug equipment applications.
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