Door Seal with Top Bulb Pinchweld is a high-performance sealing solution engineered to create a tight, reliable barrier for various door applications. Its unique structure combines a sturdy pinchweld base with a flexible top bulb, designed to fit seamlessly onto door edges while delivering superior sealing performance. The product is available in a range of standard sizes, and can also be customized to meet specific dimensional requirements of different projects.
Material
We utilize premium EPDM rubber as the core material for this door seal. This material is selected for its exceptional resistance to weathering, ozone, UV rays, and extreme temperatures, ensuring long-lasting performance even in harsh environments.
EPDM Dense Rubber Technical Data
- Hardness (Shore A): 70 ± 5
- Tensile Strength: ≥8.0 MPa
- Elongation at Break: ≥ 200%
- Compression Set (23°C × 72h): ≤25%
- Heat Aging Resistance (100°C × 70h):
- Hardness Change: ≤ 5 points
- Tensile Strength Change Rate: -15% ~ 15%
- Elongation at Break Change Rate: -25% ~ 0
- Ozone Resistance: No Cracks
- Brittleness Temperature: -40°C
EPDM Sponge Rubber Technical Data
- Density: 0.65 +/-0.15 g/cm³
- Tensile Strength: ≥ 3.0 MPa
- Elongation at Break: ≥ 200%
- Compression Set (Defl. 50%, 70°C x 22h): ≤ 50%
- Heat Aging Resistance (70°C x 70h) – Tensile Strength Change: ≤ 20%
- Heat Aging Resistance (70°C x 70h) – Elongation Change: ≤ 30%
- Brittleness Temperature: -40°C
- Ozone Resistance: No cracks
Feature
- Easy Installation: The seal can be fitted quickly without requiring special tools, attaching firmly to sheet edges made of most common materials without additional fixings.
- Superior Sealing Performance: The top bulb design provides excellent compression recovery, effectively blocking dust, water, air, and noise from entering the interior space.
- Durable Construction: The combination of high-quality EPDM rubber and optional sturdy inserts ensures the seal maintains its shape and functionality over prolonged use, resisting wear and deformation.
- Low VOC Emission: Our EPDM rubber formula is developed to meet strict environmental standards, emitting minimal volatile organic compounds for a healthier indoor environment.
Application
This versatile door seal finds wide application across multiple industries:
- Automotive: Ideal for car doors, truck cabins, and bus entryways, enhancing passenger comfort by reducing noise and preventing water leakage.
- Industrial Equipment: Used in machinery enclosures, electrical cabinets, and storage hatches to protect internal components from dust and moisture.
- Building & Construction: Suitable for residential and commercial doors, including wooden doors, garage doors, and glass curtain walls, improving energy efficiency by minimizing air infiltration.
- Marine: Applied in ship and yacht doors to withstand saltwater corrosion and ensure a watertight seal in marine environments.
Capabilities
R&D Expertise
With more than 25 years of industry experience, we have established a professional R&D team specializing in EPDM polymer materials. Our team holds independent formula development, structural design, and CAE simulation capabilities, enabling us to create sealing solutions that meet the stringent technical standards of domestic and international mainstream customers.
Manufacturing Strength
We operate a 10-acre production base equipped with advanced domestic production equipment and design software. Our full-chain manufacturing capabilities include synchronous development with vehicle manufacturers, precision mold making, automated extrusion, vulcanization, and post-processing. We strictly follow standardized production processes to ensure consistent product quality.
Quality Assurance
We implement the IATF 16949 quality management system, establishing a comprehensive control system covering raw material inspection, in-process monitoring, finished product testing, and after-sales service. This ensures that every product leaving our factory meets the highest quality standards, and we provide timely responses to customer needs to ensure satisfaction.
Customization Service
Beyond standard products, we offer tailored sealing solutions. Our custom-molding capabilities cover compression molding and injection molding, working with polymers such as EPDM, NBR, and silicone rubber. We can develop products with specific performance characteristics to address unique customer requirements, providing competitive pricing and on-time delivery.
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