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D-Profile Silicone Foam Seal Strip 20–70mm | Heavy Duty Thermal & Weather Resistant Seal

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Heavy duty D-Profile Silicone Foam Seal Strip 20–70mm features closed cell silicone foam construction, excellent thermal insulation, weather resistance, and reliable sealing performance for industrial applications. Custom sizes available.
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Estimated Delivery Date: Aug 14 - Aug 14
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Heavy Duty D-Profile Silicone Foam Seal Strip

Product Overview

Heavy Duty D-Profile Silicone Foam Seal Strip is a large-size closed cell silicone foam sealing solution designed for demanding industrial sealing applications. Featuring a unique D-shaped profile with a flat mounting base and rounded compression surface, this silicone foam seal strip provides reliable cushioning, gap filling, thermal insulation, and environmental protection.

With a 20–70mm profile range, these heavy duty silicone foam seals are suitable for applications requiring higher compression capacity, improved sealing performance, and long-term durability. The closed cell silicone foam structure helps prevent water ingress, dust penetration, air leakage, and vibration transmission while maintaining excellent flexibility under harsh operating conditions.

Key Features

  • Heavy Duty D-Profile Design

 The D-profile cross section provides a stable sealing surface and efficient compression performance. The flat base allows secure installation, while the rounded top section offers consistent contact pressure and reliable gap sealing.

  • Closed Cell Silicone Foam Structure

 Closed cell silicone foam provides excellent resistance to moisture, air, and environmental exposure. Unlike open-cell foam materials, it helps minimize water absorption and maintains sealing performance in outdoor and industrial environments.

  • Thermal Insulation Performance

 Silicone foam has excellent temperature resistance and insulation properties, making these seals suitable for equipment exposed to heat, cold, and temperature fluctuations.

  • Weather & UV Resistance

 The silicone material offers outstanding resistance to sunlight, ozone, aging, and outdoor weather conditions, providing long service life for exterior sealing applications.

  • Vibration & Shock Absorption

 The flexible foam structure helps absorb vibration, reduce impact stress, and improve sealing reliability in machinery and equipment.

Specifications

  • Material: Silicone Foam Rubber
  • Profile Shape: D-Profile / D-Shape
  • Structure: Closed Cell Foam
  • Size Range: 20–70mm
  • Temperature Resistance: Approx. -60°C to +200°C (custom grades available)
  • Color: Black / White / Custom Colors Available
  • Hardness: Customizable
  • Surface: Smooth Skin / Custom Surface Finish Available
  • Installation: Adhesive Backing Available Upon Request

Applications

Heavy Duty D-Profile Silicone Foam Seal Strips are commonly used for:

  • Industrial equipment enclosures
  • Electrical cabinets and control panels
  • Machinery doors and access panels
  • Large equipment housing seals
  • HVAC systems
  • Transportation equipment
  • Outdoor cabinets and electrical boxes
  • Industrial doors and hatches
  • Thermal insulation sealing applications

Custom Heavy Duty Silicone Foam Seal Strip

We manufacture custom D-Profile Silicone Foam Seal Strips according to profile dimensions, hardness, density, color, and application requirements. OEM extrusion services are available for industrial sealing projects requiring large-size silicone foam profiles.

Whether used for thermal insulation, weather sealing, vibration reduction, or equipment protection, our heavy duty silicone foam seals provide reliable performance in demanding environments.
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