PORON® 4790-92

Extra soft, slow rebound polyurethane foam for gasketing, cushioning, gap filling, and vibration management

PORON® 4790-92 is an extra soft, slow rebound microcellular polyurethane foam designed for applications that need very low closure force, conformability, and dependable long-term performance. It is a strong option for delicate assemblies where cushioning, sealing, and low-energy impact protection all matter.

With its soft feel, open-cell structure, and slow rebound characteristics, PORON® 4790-92 performs well in custom gasket, cushioning, and vibration-damping applications. It is especially useful when the design calls for a material that can conform to irregular surfaces while maintaining recovery over time.

Why Choose PORON® 4790-92

• Extra soft, slow rebound polyurethane foam
• Very low closure force for delicate assemblies
• Conformable open-cell structure for gap filling and sealing
• Available in density options from 9 to 30 lb/ft³
• Thickness range from 0.021 in. to 0.500 in.
• Good fit for low-energy impact absorption, cushioning, and vibration damping
• Long-lasting performance with excellent recovery characteristics

Common Applications for PORON® 4790-92

PORON® 4790-92 is commonly used where ultra-soft cushioning, low closure force, and vibration control are important.

• Active safety components
• Battery pads and cushions
• Cushioning layers
• Display protection
• Gap-filling components
• Gaskets and seals
• Impact-absorption components
• LCD gaskets
• Shock-absorption parts
• Sound-blocking and sound-absorbing components
• Vibration-management applications

Available 4790-92 Material Options

PORON® 4790-92 is available in both unsupported and supported constructions.

• PORON® 4790-92 Extra Soft – Slow Rebound
• PORON® 4790-92 Extra Soft – Slow Rebound Supported
• Supported constructions are available in multiple density and thickness combinations

Data Sheets

Custom PORON® 4790-92 Gaskets, Seals & Converted Parts

SRP converts PORON® 4790-92 into custom die-cut gaskets, seals, cushions, pads, and gap-filling components for applications that need very soft compression, slow rebound, and long-term recovery. Our team can help match the right thickness, density, adhesive, and part configuration to your design requirements.

Send us your drawing, part dimensions, material requirements, adhesive needs, and annual usage, and we’ll review the application and recommend the right PORON® 4790-92 solution.