
Polyurethane Foams Gaskets
Rogers PORON® Polyurethane Industrial foams for gaskets and dust seals
Rogers line of PORON Industrial Polyurethanes provide durable, long-term performance in industrial applications. Poron® foam is a microcellular Urethane product that can be used in a range of applications. Poron is incredibly diverse depending on the grade, ranging from soft to firm. The foam has an open-cell design which allows for greater resiliency and longevity, even after multiple impacts. Even though Poron is open-cell, it can provide a water-tight seal, making it a good choice for electronics, military, oil patch, and other gasketing areas.
Features & Benefits:
- Excellent compression set resistance
- Low-outgassing and non-fogging, containing no plasticizers or residual chemicals to contaminate the device.
- The material will not become brittle and crumble and is non-corrosive to metal.
- Inherently flame retardant without the use of additives. Many of the materials meet flammability requirements of UL HBF and MVSS 302.
- Engineered urethane formulations offering a wide modulus range – 2-90 psi @ 25% deflection – for more design versatility requirements.
- Good chemical resistance
- Easy to fabricate, die-cuts cleanly, and works with a broad range of adhesives
- Broad range of formulas and thicknesses from 0.012″ to 0.500″ (0.43mm to 12.7mm)
Markets & Applications
- Battery Pads & Cushions
- Cushion Mounting Materials
- Cushioning
- Display Protection
- Gap Filling
- Sound Blocking and Absorption
- Vibration Management

Standard PORON® Polyurethane
- Extra Soft, Slow Rebound PORON® 4790-92: Extra soft with slow recovery perfect for applications needing high conformability and excellent gap filling.
Very Soft PORON® 4701-30 A very soft material, ideal for general purpose gaskets and gap-filling applications, providing excellent conformability and dust ingress protection. - Soft PORON® 4701-40: Soft yet versatile, suitable for a variety of cushioning and sealing applications with good vibration management and gap filling properties.
- Firm PORON® 4701-50: A firm formulation offering reliable performance for applications requiring minimal gap filling and moderate vibration management.
- Very Firm PORON® 4701-60: Very firm, designed for applications where less conformability is needed and minimal vibration management is sufficient.
Specialty PORON® Polyurethane
- Very Soft, Enhanced Sealability PORON® AquaPro™ 4701-37: Enhanced water sealing capabilities in a very soft material, ideal for applications requiring superior water-tight seals and excellent conformability.
- Soft, Enhanced SealabilityPORON® AquaPro™ 4701-41: Soft, enhanced sealability material offering greater closed-cell content for demanding vacuum sealing applications or low closure-force requirements.
- PORON® 4701-V0-M Medium (UL94 V-0): Medium firmness foam specifically formulated to meet all requirements under UL94 V-0 flammability rating.
- Soft, EV Battery Pad PORON® EVExtend 4701-43: A versatile battery pad material designed for Electric and Hybrid-Electric Vehicle batteries, offering a thickness range of 0.039 to 0.118 inches and a density range of 7 to 20 lb/ft³. It provides consistent pushback force throughout the battery life, ideal for pouch applications requiring high conformability and excellent pressure management.
- Extra Firm, EV Battery Pad PORON® EVExtend 4701-71: Specifically crafted for higher energy density applications in rigid prismatic and solid state batteries, this material features a density of 20 to 25 lb/ft³ at a 0.188-inch thickness. It ensures superior compression set resistance and stress relaxation properties for reliable, long-term performance under consistent, higher pressure.
- PORON® ShockSeal™ 4790-79: Offers specialized impact protection, ideal for applications requiring cushioning against shocks and bumps.