PORON® Urethane Foam
Exceptional Elasticity and Highly Predictable
PORON® is a particular type of urethane foam developed by Rogers Corporation. Formulated for exceptionally elastic and highly predictable performance, an open structure provides superior recovery characteristics. PORON® has a pore density of around 240 per linear inch, making it an excellent choice for many gasketing applications.
Good chemical resistance lets it resist cleaning solvents while low outgassing avoids screen fogging and odors. Being a flame retardant material, it’s also good in situations where fire is a possibility, as with electrical systems.
PORON® is available in a range of grades of firmness to suit the application needs, in thicknesses up to 1/2” and with densities from 9 to 30 pcf. It makes a good alternative to silicone in many applications. PORON® is also easy to work with, die-cutting readily with good edge finish and will take an adhesive coating for ease of installation.
PORON® and Moisture
The one situation where PORON® might not be suitable is where it will be exposed to moisture. Here the cellular structure tends to wick-up moisture, especially if flexed or put through compression-relaxation cycles. In some situations this may be advantageous but in others it’s a problem. If occasional light exposure is a possibility this can be handled through compression. Reducing the foam thickness by 50 to 60% closes up the cells, increasing moisture resistance.
Characteristics of Urethane Foam
Compressibility lets foam conform to a gap that may vary, making it a good choice for sealing and gasketing. Recovery performance is also usually a requirement, in which case it makes sense to consider PORON® urethane foam. PORON® has a range of properties making it an excellent choice as a gasket material.
• High Predictability
• Superior Recovery Characteristics
• Good Chemical Resistance
• Flame Retardant
• Easy to Work With
• Will Take Adhesive Coating
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PORON® foam is useful in many industries and in a variety of ways.
• Enclosure Doors
• Access Panels
• Doors to Appliances
• Wet Benches and Fume Hoods
• Consumer Appliances
• Automotive Interiors
• Impact Resistance