Polyurethane Foam
PORON® 4701-40
Soft polyurethane foam for gasketing, sealing, vibration management, and gap-filling applications
PORON® 4701-40 is a soft microcellular polyurethane foam designed for gasketing, sealing, and vibration-management applications. It offers a balance of softness, support, and durability for a wide range of industrial applications.
For designs that need more support than a very soft foam while still maintaining good conformability, PORON® 4701-40 is a versatile option for custom gaskets, pads, and sealing components.
Why Choose PORON® 4701-40
- Soft polyurethane foam for gasketing, sealing, vibration management, and general-purpose gap filling
- Available in 15, 20, and 30 lb/ft³ density options
- Published thickness range from 0.031 in. to 0.500 in.
- Good balance of conformability and support
- Excellent dimensional stability and durability
- Strong fit for applications requiring dependable sealing and repeated compression performance
Common Applications for PORON® 4701-40
PORON® 4701-40 is commonly used where a soft material is needed for dependable sealing and general-purpose compression management.
- Gaskets and seals
- Gap-filling components
- Vibration-management parts
- Portable electronics applications
- Automotive assemblies
- Aerospace applications
Available 4701-40 Material Options
PORON® 4701-40 is available in standard constructions with supporting technical documentation.
- PORON® 4701-40 Soft
- PORON® 4701-40 Soft Global Standards Data Sheet
- PORON® 4701-40 Ideal CFD Curves for Battery Pad Applications
Data Sheets
Custom PORON® 4701-40 Gaskets, Seals & Converted Parts
SRP converts PORON® 4701-40 into custom die-cut gaskets, seals, pads, and vibration-management components for a wide range of industrial applications. Whether you need dependable sealing, cushioning, or gap filling, our team can help identify the right thickness, density, adhesive, and part design for your project.
Send us your drawing, part dimensions, material requirements, adhesive needs, and annual usage, and we’ll review the application and recommend the right PORON® 4701-40 solution.
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Need Custom PORON® 4701-40 Gaskets or Converted Parts?
SRP converts PORON® 4701-40 into custom die-cut gaskets, seals, pads, and vibration-management components for a wide range of industrial applications. Submit your drawing, dimensions, thickness requirements, adhesive needs, and estimated annual usage, and our team will review your project and follow up with a quote.