GYLON® Style 3565 ENVELON® Gasketing
PTFE Gasketing with Aluminosilicate Microsphere Filler
GYLON® Style 3565 ENVELON® is a high performance, aluminosilicate microsphere filled PTFE gasketing material designed to compress and conform to irregular surfaces, giving it a tight seal on glass-lined and wavy flanges.
- Tight seal
- Soft, durable exterior conforms to surface irregularities
- Ideal for worn, warped, or pitted flanges
- Stable blue core improves cold flow resistance
- Low bolt load requirements ensure a tight seal on glass-lined or wavy flanges*
- Direct sintering of GYLON® layers prevents leak paths and adhesive contamination
- Easy to install
- Custom-cut gaskets from large sheets offer convenience while reducing costly inventory buildup
- Ideal replacement for slit, milled, formed shield, and double jacketed envelope gaskets* which are prone to foldover during installation
- Will not support flame
- Will not support bacterial growth
*When sealing uneven flanges, gasket must be four times thicker than maximum gap between flanges.
- Available in sheet or cut gasket form
- White exterior and blue interior
- PTFE with Aluminosilicate microspheres
- Min. Temperature: -450°F / -268°C
- Max. Temperature: 500°F / 260°C
- Max. Pressure: 1200 PSI / 55 bar
- Maximum PxT 1/16: 350,000 °F x PSIG / 12,000 bar x °C
- Hydrocarbons
- Solvents
- Moderate concentrations of acids and caustics
- Cryogenics
- Glass-lined Equipment
- Hydrogen peroxide
- Refrigerants
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