Custom Silicone Extruded Seals
Profiles With Post Processing
Profiles With Post Processing
High Temperature Resistant solid silicone square strips | Heat-Resistant, Anti-Collision & Waterproof Silicone Sealing Flat Strip
Technical Specifications
| Product Name | High Temperature Resistant solid silicone square strips |
| Product Features | Operating temperature range: -40°C to +280°C. Soft, pressure-resistant, and high-density |
| Product Application | For sealing and dustproofing in electronics, automotive, and construction applications |
| Product Color | Natural and all kinds colors available in pantone color card |
| Temperature Range | -40°C to +280°C |
| Cross Section Size | 3-30mm |
| Hardness | 60-70shore A(can be customised ) |
| Density | 0.35g/cm3 to 0.9g/cm3 |
| Specifical gravity | 1.1-1.3 |
| Elongation | 280% |
| Tensile Strength | >=3.5Mpa |
| Package | 50M each roll or according customer’s required |
| MOQ | 1000M |
Product Advantage
Excellent Temperature and Aging Resistance
With an operating range from -40°C to +280°C, the strip withstands both high and low temperatures, resists aging and pressure, and maintains its sealing properties over time.
Premium Silicone Material
Manufactured from new, high-grade silicone, the strip has a smooth and fine surface, free of impurities and burrs, ensuring a neat appearance and consistent performance.
Superior Flexibility and Durability
The strip offers excellent elasticity, tear resistance, and deformation recovery. It remains flexible without whitening or cracking, ensuring long service life and reliable performance.
Uniform Cross Section
The tube features a consistent cross section and even wall thickness, guaranteeing a reliable seal and sufficient material strength for demanding applications.
Why Choose Our Silicone Square Strip?
Our silicone gaskets deliver exceptional temperature, UV, and ozone resistance, ensuring reliable performance in both extreme heat and cold. They maintain flexibility and sealing integrity from -60°C to +230°C, outperforming many alternative materials.
We specialize in custom profiles and formulations—offering tailored durometers, colors, and shapes to match exact application needs. Our tight tolerance control and consistent cross-section quality ensure perfect fit and long-term reliability.
Our silicone compounds meet industry standards (FDA, UL, ASTM, and NSF as required) and provide long service life even in harsh environments. This means fewer replacements, reduced downtime, and lower total cost of ownership.
We don’t just sell gaskets—we partner with customers from design to production. Our in-house engineering support, quick prototyping, and reliable lead times help customers move from concept to finished product faster.
Product Application
Our Silicone Square Strip is engineered for sealing, dustproofing, waterproofing, and anti-collision in high-demand industrial scenarios, delivering reliable performance across electronics, automotive, and construction sectors. Below are key application scenarios and use cases:
1. Electronics Industry
Sealing for electronic enclosures, PCB boards, and power supply units (PSUs) to prevent dust, moisture, and debris intrusion
Gap filling and vibration damping for consumer electronics (e.g., smartphones, laptops) and industrial control panels
Thermal insulation for high-temperature electronic components, maintaining stability in -40°C~+280°C operating environments
2. Automotive Industry
Door/window sealing, trunk weatherstripping, and engine compartment gaskets (resisting engine heat and road debris)
Sealing for automotive lighting fixtures, battery packs, and EV charging ports (waterproof and aging-resistant)
Anti-collision and noise reduction for interior trim gaps (soft texture, pressure-resistant, and durable)
3. Construction Industry
Window/door frame sealing, curtain wall gap filling, and glass installation gaskets (waterproof, dustproof, and weatherproof)
Sealing for HVAC systems, plumbing pipelines, and building expansion joints (adapting to temperature fluctuations)
Decorative and protective edging for architectural panels (smooth surface, consistent cross-section, and long-term durability)
4. Other Industrial Fields
Sealing for medical equipment (compliant with hygiene standards, non-toxic and odorless)
Gaskets for kitchen appliances (e.g., ovens, dishwashers) with high-temperature resistance up to +280°C
Customized sealing solutions for machinery, aerospace components, and marine equipment (tailored sizes and hardness)
Ideal for scenarios requiring tight sealing, extreme temperature resistance, and long service life—our silicone square strip ensures operational reliability and reduces maintenance costs for industrial applications.
Shenzhen ESMAI Technology Co., Ltd.
Headquartered in Shenzhen, China, we provide one-stop solutions for custom silicone extruded gaskets and seals, from material formulation to precision post-processing, serving as a reliable OEM/ODM partner worldwide. Backed by strong engineering expertise, our 3,000+㎡ production base with 10+ high-precision extrusion lines supports both prototyping and mass production (daily output up to 30,000 meters), while adhering to ISO 9001:2015, RoHS, REACH, UL 94 V-0, and FDA standards for strict quality and traceability. We deliver efficient services, including custom molds in 3–5 days, samples in 3–7 working days, and mass production in 10–20 working days, all supported by global logistics.
Our highly customizable products stand out for superior durability (resistant to UV, chemicals, and extreme temperatures up to 315°C), easy installation, and tight dimensional precision, making them ideal for automotive, LED lighting, electronics, HVAC, medical, construction, and solar industries. We’ve provided stable solutions for global customers, and adhering to quality-first and customer-centric principles, we sincerely invite long-term cooperation and welcome your inquiries.
Product performance is stable, patents are complete, safety and quality are guaranteed.
Got Questions? Well, We've Got Answers.
We have experience in extrusion, in-house tooling, quality certifications (ISO, FDA, USP, NSF), and the ability to customize profiles to your exact needs. we also provide samples and technical support.
For standard profiles: often stocked and ready to ship , for custom extrusions: typically 2–4 weeks for tooling and production time. we can also offer expedited services if customer is in great hurry for the product.
We will go beyond extrusion by providing
1),Splicing into O Rings gaskets
2)Cut-to-length services
3)Adhesive backing/tape application
4)Wind into rolls
Yes, a strong supplier should offer stock profiles (D, P, E, U, bulb seals, cords, etc.) and custom designs for unique requirements. Customization is key if your project has specific sealing needs.
Yes, we have in-house die-making capabilities, allowing faster customization and better quality control.
We usually provide prototype samples or small trial runs so you can test fit, compression, and performance before committing to full orders.
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