ShinEtsu SEALANT-4588 is a one-component RTV silicone sealant designed for controlled industrial sealing and bonding tasks where stable handling, predictable curing behavior, and long service life are required. During application, the material exhibits smooth extrusion and consistent bead formation, allowing operators to achieve uniform joints with minimal surface correction. After curing at ambient conditions, the elastomer maintains elasticity and surface integrity, providing a stable sealing experience over time without noticeable shrinkage or surface cracking, even under fluctuating environmental exposure.

• Strong Adhesion - ShinEtsu SEALANT-4588 provides reliable adhesion to metals, glass, and engineering plastics commonly used in industrial assemblies. Standard lap shear testing on aluminum substrates shows cured adhesion strength typically above 1.2 MPa at room temperature. This adhesion level supports stable joint performance under static loads and prevents debonding during long-term service.

  
  

• Moisture Resistance - After curing, the silicone elastomer exhibits low water absorption, generally below 0.5 percent by weight after 24-hour immersion at 23°C. Water resistance testing confirms that the cured seal maintains barrier integrity in high-humidity environments. This property helps protect bonded interfaces from moisture-related degradation over extended operating periods.

  
  

• Elastic Stability - The cured material maintains elongation at break of approximately 300 percent, allowing it to absorb joint movement caused by vibration or thermal expansion. Compression set values remain below 20 percent after prolonged deformation, indicating strong elastic recovery. This stability ensures consistent sealing performance without permanent deformation.

  
  

• Chemical Durability - SEALANT-4588 demonstrates resistance to diluted acids, alkalis, and common industrial oils. Accelerated aging tests at elevated temperatures show Shore A hardness variation within ±5 points after prolonged exposure. This confirms that mechanical properties remain stable when exposed to chemical environments typically found in industrial settings.

  
  

• Controlled Viscosity - The sealant has a typical viscosity of approximately 80,000 mm²/s at 25°C, enabling consistent extrusion and bead control. This viscosity range supports uniform application without sagging or excessive flow. Stable rheological behavior contributes to predictable curing thickness and joint geometry.

• Construction Sealing - SEALANT-4588 is used for sealing joints in panels, frames, and structural interfaces where controlled elasticity is required. Joint movement capacity of approximately ±25 percent supports dimensional changes caused by temperature variation. This helps maintain long-term sealing integrity in building assemblies.

  
  

• Electronics Enclosures - In electronic housings and control units, the sealant provides environmental sealing against dust and humidity. Volume resistivity above 10¹⁴ ohm·cm ensures non-conductive performance. This supports safe use near sensitive electronic components without electrical interference.

  
  

• Automotive Assemblies - The product is applied in non-engine automotive sealing tasks such as lighting housings and sensor enclosures. Operating temperature tolerance from approximately −50°C to +200°C supports stable sealing across varying vehicle conditions. This contributes to consistent performance throughout the vehicle service life.

  
  

• Industrial Equipment - SEALANT-4588 is suitable for sealing covers, inspection ports, and housings in industrial machinery. Its vibration tolerance helps maintain seal integrity during continuous equipment operation. This reduces the risk of leakage and unplanned maintenance.

  
  

• Maintenance Repairs - For industrial maintenance work, the one-component formulation allows direct application without mixing. Skin formation typically occurs within 10 to 20 minutes at 23°C, enabling efficient repair cycles. This supports fast turnaround during equipment servicing and downtime reduction.