Custom Extruded Silicone Rubber Profiles Manufacturer
Silicone rubber extrusions are flexible rubber profiles manufactured in continuous lengths and formed into specific cross-sectional shapes. They are widely used for sealing, insulation, cushioning, protection, and fluid transfer where reliable performance is required across changing temperatures and demanding operating conditions.
SEASHORE manufactures silicone rubber seals in a wide range of profiles, dimensions, hardness levels, colors, and silicone formulations. From simple silicone cords and tubing to complex sealing profiles, our extrusion capabilities support both standard products and application-specific designs.
Custom Silicone Rubber Extrusions
Available customization options include:
| Item | Details |
| Profile Types | Silicone Tubes, Cords, Strips, Gaskets, Door Seals, and Custom Profiles |
| Cross Section | Round, Square, Rectangular, D-Shaped, U-Shaped, or Custom |
| Size Range | 1 mm – 100 mm (Customized) |
| Length | 5m–100m |
| Color | Translucent, White, Black, Red, Blue (Standard); Custom Colors Available |
| Tooling | Custom extrusion tooling designed per your drawings |
| MOQ | Standard product: 1,000 meters；Lower MOQs are offered for sample and trial orders. |
| Application | Industrial Equipment, Automotive Components, General Sealing |
Seashore Silicone Extrusions Specifications
| Parameter | 1.Specification |
| Material | Silicone Rubber (VMQ) |
| Product Type | Extruded Silicone Profiles (Seals, Gaskets, Tubes, Strips, Cords, etc.) |
| Color | Translucent, White, Black; Custom Colors Available |
| Hardness (Shore A) | 20–80 Shore A (Customized Available) |
| Temperature Range | -60°C to +200°C ；up to +250°C (short term) |
| Tensile Strength | 5–12 MPa |
| Elongation at Break | ≥ 300% |
| Density | Solid: ~1.15–1.25 g/cm³ |
| Surface | Smooth, Matte, Fabric Impression or Customized Surface |
| Size | Custom Dimensions Available According to Drawings or Samples |
| Tolerance | RMA E2 (or per customer specification) |
| Certification | RoHS, ISO 9001(others certifications available) |
Silicone Rubber Extrusion Hardness Range
| Grade | Shore Hardness | Temperature Range | Applications |
| Ultra Soft Silicone | 10–20 Shore A | -60°C to +200°C | Soft seals, cushioning, medical applications |
| Soft / General Silicone | 20–40 Shore A | -60°C to +200°C | general sealing strips, gaskets, and vibration dampers. |
| Medium Silicone | 40–60 Shore A | -60°C to +200°C | Industrial sealing strips, profiles |
| Hard Silicone | 60–80 Shore A | -60°C to +200°C | high-strength profiles and automotive structural parts. |
| Custom Silicone | 5–90 Shore A | -60°C to +250°C | OEM silicone extrusions |
Types of Silicone Extrusions
Silicone Rubber Profiles
Custom silicone profiles can be extruded in simple or complex cross-sectional shapes according to drawings, samples, or application requirements. Common profiles include D-shape, P-shape, U-channel, bulb, lip, hollow, and edge trim designs.
Silicone Rubber Tubing
Silicone tubing is available in different inner diameters, outer diameters, wall thicknesses, hardness levels, and material grades. Custom tubing can be produced for air, liquid, insulation, and equipment connection applications.
Silicone Rubber Cord
Solid silicone cord is available in multiple diameters and hardness options. It is commonly supplied for gasket fabrication, O-ring production, gap filling, cushioning, and general sealing applications.
Silicone Sponge Profiles
Silicone sponge extrusions provide lower compression force and greater conformability than solid silicone. They are suitable for applications requiring soft sealing, cushioning, or vibration absorption.
Silicone Strips and Channels
Extruded silicone strips and channel profiles can be customized in width, thickness, hardness, and cross-sectional design for equipment protection, insulation, edge covering, and sealing.
Key Properties of Silicone Rubber Extrusions
Wide Temperature Resistance
Silicone rubber maintains stable performance across a broad temperature range and remains flexible under both high and low temperature conditions.
Weather and UV Resistance
Silicone rubber offers strong resistance to UV radiation, ozone, moisture, and outdoor weathering, helping maintain performance during long-term environmental exposure.
Flexibility and Elasticity
Silicone extrusions provide good flexibility and elastic recovery, allowing the material to withstand repeated compression, movement, and deformation.
Compression Recovery
Silicone rubber can recover effectively after compression, which helps maintain sealing performance in applications involving repeated opening, closing, or mechanical pressure.
Electrical Insulation
Silicone rubber provides good electrical insulation properties and is widely used in electrical, electronic, and high-voltage related applications.
Chemical and Aging Resistance
Silicone rubber has good resistance to oxidation, aging, and many environmental chemicals, helping extend service life under demanding operating conditions.
How to Choose the Right Silicone Extrusion
Choosing the right silicone extrusion depends on the sealing function, installation space, operating conditions, and required material performance.
Profile and Dimensions: Confirm the installation gap, groove size, cross-sectional shape, and required dimensions to ensure the extrusion fits correctly.
Material and Hardness: Choose between solid or sponge silicone and select the appropriate hardness based on compression, flexibility, and mechanical requirements.
Operating Conditions: Consider continuous and peak temperatures, as well as exposure to UV, ozone, moisture, steam, oils, or chemicals.
Compression Requirements: For sealing applications, the profile should provide sufficient compression without creating excessive closing force.
Compliance: Food-grade, flame-retardant, electrical, or other specialty silicone compounds can be selected when specific standards are required.
SEASHORE Silicone Extrusions in Detail
