PORON® 4790-92 Polyurethane Foam | Low-Energy Impact Protection And Sealing Solution

 

Poron 4790 Series Polyurethane Foam Supplier | Custom Die-Cut Gaskets

The Poron 4790 series (specifically featuring the extra-soft Poron 4790-92) represents the industry standard for ultra-soft, highly compressible microcellular polyurethane foam. Engineered by Rogers Corporation and precision-fabricated by STK Tape, this series is uniquely formulated to provide exceptional sealing and shock absorption under low closure force, making it the premier choice for thin-profile electronic enclosures, displays, and sensitive medical hardware.

 

As a certified converter, STK Tape provides master logs, custom-slit rolls, and precision die-cut Poron 4790 series gaskets integrated with high-performance acrylic adhesives to streamline your automated or manual assembly lines.

Get PORON Series  Competitive Pricing

Zero-Fatigue Compression Recovery: Retains its original sealing thickness and elastomeric rebound even after millions of micro-compression cycles, preventing environmental leakage or mechanical shifting in handheld electronics.

Superior Shock Absorption & NVH Control: Dissipates impact energy with a high ball-rebound resilience (≥ 45%), cushioning fragile OLED displays, camera modules, and internal EV hardware from drop damage.

Non-Fogging & Non-Corrosive Cleanliness: Free of plasticizers and residual chemicals. Meets strict electronics outgassing specifications, ensuring zero chemical outgassing to prevent fogging on lens arrays or corrosion on gold-plated PCB contacts.

Note: The part numbers listed below represent STK Tape's performance-matched equivalents designed to fully cross-reference the dimensions and densities of the 4790-92 industry standards.

The Poron 4790 series requires specialized handling to maintain its strict dimensional tolerances during conversion. At STK Tape, we optimize this material for advanced fabrication:

Intricate Geometric Die-Cutting: Utilizing high-speed rotary and flatbed die-cutting presses, we convert Poron 4790-92 sheets into intricate, complex gaskets with sharp edges and internal cutouts down to millimeter-level tolerances.

Multi-Layer Adhesion Lamination: We supply die-cut Poron gaskets pre-laminated with single-coated or double-coated pressure-sensitive adhesives (PSA) and extended liners (pull-tabs) for effortless manual peeling during device assembly.

Zero-Deformation Custom Slitting: Our cleanroom slitting equipment cuts master logs into ultra-narrow rolls without crushing the delicate microcellular edges, preserving the material's full thickness and sealing efficacy.

 

Cost-Effective Brand Alternative

 

Save 35%–50% on Sourcing Costs: We manufacture self-developed microcellular polyurethane foam that serves as a direct, drop-in replacement for Rogers PORON® 4790-92 series (including Extra Soft, Soft, and Medium density options).
Seamless Engineering Validation: Our 4790-92 alternative series matches the critical thermal thresholds, drop-shock damping, and strict compression recovery standards of the original component, allowing global OEMs and tier-1 suppliers to optimize material supply chains and drastically cut raw procurement costs
 

1.Smartphones & Handheld Displays：Cushioning & Dust Exclusion.Precision die-cut Poron 4790-92 gaskets serve as LCD/OLED display surrounds, camera lens cushions, and speaker mesh seals, absorbing drops while maintaining IP-rated dust barriers.

2.EV Battery & Automotive Electronics：Vibration Isolation & Sealing.Used as anti-rattle isolation strips, gap fillers, and environmental seals within electronic control units (ECUs) and sensor housings exposed to constant road vibration.

3.Medical Diagnostics & Wearables：Biocompatible Enclosure Barriers.Due to its ultra-low outgassing and high purity, the Poron 4790 series seals sensitive medical instrumentation, protecting internal circuitry from fluid ingress without chemical leaching.

4.Aerospace Avionics & Telecom：Ruggedized Environmental Gaskets.Provides reliable, long-lasting micro-environmental sealing for outdoor telecom base stations and commercial aviation instrumentation compartments.

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