Impregnated PTFE Felt Sheets
XT-8911 (Armalon) is produced by impregnating a needled PTFE fiber felt base with PTFE resin and has been used in gasket and wiper applications for over 40 years (previously sold as XT-7700). The result is a soft material which conforms to uneven flanges, providing durable seals with minimum flange pressures. Because it is made with PTFE, it releases easily from flanges when disassembly is necessary, and can often be reused instead of being replaced. XT-8911 resists attack by such chemicals as red fuming HNO3 , H2SO4, HF, HCI, aqua regia, NaOH, and anhydrous NH3. Other physical properties of XT-8911 are listed in the chart below.
With Tensile in the 2000 psi range and Burst in the 8000 psi range, XT-8911 is very strong but soft enough to seal with lower pressures and on uneven flange surfaces, yet still compresses over 30% with a recovery rate over 20%, making it well suited for many type of flange applications. Additionally, in some cases XT-8911 was able to be reused after many years due to its overall high strength, recovery, and resiliency properties. When removed, it recovers about 25% and can be compressed again.
Stock XT-8911 for all your gasketing applications and eliminate the need to maintain expensive inventories of other materials. Sheets of Armalon can easily be cut to desired configuration and are available in either sheets or cut gaskets.
- Heat Resistant
- Cold Resistant
- Radiation Resistant
- Cold Flow Resistant
- Conforms to Uneven Flanges with minimal pressure
- Resists attack of strong acids and bases
- Higher Operating Temperatures
- Inertness to Acid, Alkalis and Organic Solvents
- Zero Moisture Absorption
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For more information on PTFE Felt please contact a representative or call 708.479.7979.