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Expanded Teflon® Joint Sealant

24B 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.


24B 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 24B 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.


Density 39 lbs./cu. ft.3, 0.63g./cm3
Elongation 25%
Matrix Tensile Strength 4260 psi
Creep Relaxation ASTM F38 51%
Sealibilty ASTM F 37A 0.1 ml/hr.

Service Limits

ph Range 0 - 14
Temperature Limits (°F) -400° to +500°
Pressure Limits 2900 psi

Available Sizes

Flange Diameter Size 24B Tape Width
up to 1/2" 1/8"
3/4" to 1 1/2" 3/16"
2" to 4" 1/4"
5" to 8" 3/8"
10" to 16" 3/8"
18" to 24" 5/8"
24" to 48" 3/4"
48" and above 1"

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