OKIN is a direct IATF 16949 certified manufacturer of custom automotive rubber seals and extrusion profiles, serving OEMs, Tier 1 suppliers, and aftermarket distributors worldwide. Operating under rigorous ISO 9001 quality systems, we ensure every profile meets strict international standards.
Made from premium EPDM and high-grade silicone, our extruded weatherstrips are engineered for extreme durability, providing superior waterproofing and noise reduction. Whether you need custom CAD tooling or rapid mass production, we offer reliable sealing solutions across all major vehicle types:
Automotive Weatherstripping: Primary and secondary door seals for passenger cars and SUVs.
Car Window Channels: Precision flocked glass run channels for smooth window operation.
Windshield Weatherstrips: Bulk supply of front and rear glass rubber replacement gaskets for manufacturers.
Truck and Bus Seals: Heavy-duty, weather-resistant sealing profiles designed for demanding commercial vehicles.
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OKIN is a direct IATF 16949 certified manufacturer of custom automotive rubber seals and extrusion profiles, serving OEMs, Tier 1 suppliers, and aftermarket distributors worldwide. Operating under rigorous ISO 9001 quality systems, we ensure every profile meets strict international standards.
Made from premium EPDM and high-grade silicone, our extruded weatherstrips are engineered for extreme durability, providing superior waterproofing and noise reduction. Whether you need custom CAD tooling or rapid mass production, we offer reliable sealing solutions across all major vehicle types:
Engineered to maintain ultimate flexibility and sealing integrity in extreme conditions ranging from -40°C to 120°C without cracking or degrading.
Premium EPDM sponge rubber with a uniform cellular structure delivers exceptional acoustic insulation and vibration absorption for a quieter cabin.
Co-extruded glass run channels feature specialized flocked linings to minimize friction, ensuring thousands of smooth and quiet window rolling cycles.
Our automotive profiles are formulated for an extremely low compression set, allowing them to bounce back to their original shape even under constant pressure.
Our advanced lines combine solid rubber, sponge rubber, and metal wire carriers. This provides a strong grip on car doors and ensures the seal stays firmly in place over time.
Formulated to withstand harsh automotive environments, our specialized seals offer excellent resistance to motor oils, coolants, and cleaning fluids without swelling or degrading.
We supply a complete range of primary and secondary door seals, trunk gaskets, and hood seals for passenger vehicles. Made from high-elasticity EPDM sponge rubber, these weatherstrips provide excellent soundproofing, vibration dampening, and a watertight cabin environment.
Designed for smooth window operation, our glass run channels feature a solid EPDM base co-extruded with high-density flocking. This reduces glass friction and wear, ensuring OEM-level performance with zero binding over tens of thousands of rolling cycles.
We manufacture bulk front and rear windshield weatherstrips for automotive assembly lines and aftermarket replacements. Our precision-extruded profiles ensure a perfect, watertight fit around automotive glass, preventing leaks and wind noise at high speeds.
Commercial vehicles demand extreme durability. We produce heavy-duty sealing profiles for truck cabins, mass transit buses, and RVs. These robust seals are engineered to withstand intense highway vibrations, harsh weather, and constant UV exposure without degrading.
Quality is embedded in our supply chain. We operate strictly under IATF 16949 and ISO 9001 quality management systems. Every batch of rubber undergoes rigorous testing for tensile strength, elongation, and tolerance accuracy, ensuring a 100% qualified yield for your assembly lines.
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Equipped with an in-house die workshop, we drastically reduce sample turnaround times. Whether you need a complex co-extruded profile or a specific shore hardness, our engineers turn your CAD drawings into precise physical prototypes quickly and accurately.
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By bypassing trading companies and controlling the entire extrusion process—from raw material mixing to final vulcanization—we minimize waste and optimize production speed. This allows us to offer global buyers superior OEM quality at highly competitive direct-factory prices.
Get a Free QuoteWe provide seamless international supply chain solutions for bulk automotive rubber extrusions. Understanding that delivery time is critical for your production schedules, our logistics team expertly handles everything from rapid air freight for urgent PPAP samples to cost-effective ocean freight (FCL/LCL) for mass production. We support flexible trade terms including FOB, CIF, and DDP (door-to-door with customs clearance), ensuring your cargo arrives safely, on time, and without cross-border friction.
EPDM is the industry standard due to its outstanding resistance to UV rays, ozone, and extreme weather conditions. It maintains high elasticity from -40°C to 120°C. For specific high-temperature areas near the engine compartment, we also provide premium silicone seals.
Manufactured strictly under IATF 16949 standards, our premium EPDM seals are engineered to last 10 to 15 years under normal outdoor conditions without cracking, shrinking, or losing their low compression set.
Primary door seals are typically made of EPDM sponge rubber to block water, dust, and highway noise. Window run channels are made of solid rubber with a specialized flocked lining, which reduces friction so the window glass can roll up and down smoothly.
Yes. We supply heavy-duty sealing profiles designed specifically for commercial vehicles. These seals feature enhanced thickness, superior tear resistance, and optimized geometries to withstand the intense vibrations and harsh road conditions typical of mass transit and trucking.
With our in-house CAD/CAM tooling workshop, we typically complete custom extrusion dies and provide first-article samples within 10 to 15 days. Mass production lead times range from 3 to 4 weeks, depending on the specific order volume and profile complexity.
Rubber weatherstrips are designed to withstand various weather conditions, including rain, snow, ozone and ultraviolet radiation. The epdm materials used are often resistant to degradation caused by sunlight and extreme temperatures, providing long-term stability.
One of the main functions of rubber weatherstrip is to create a watertight barrier. They prevent water and moisture from entering the interior. They can protect passengers and interior components from water damage and corrosion.
Designed with a specialized cellular structure, these strips effectively dampen noise and absorb mechanical vibrations. They significantly reduce external sound transmission and rattles, creating a quieter and more comfortable environment for vehicle or building interiors.
Rubber weather strips are selected because of their flexibility and elasticity, characterized by a set of low compression. These properties allow the weather strips to correspond to the contours of the hole. Provides a dense and efficient seal even when the surface moves and vibrates.
The company continues to conduct research and development and technological innovation. We introduce advanced manufacturing technology and production processes. This ensures that products have industry-leading performance and quality.
All our products install strict quality control system. Every link from raw material procurement to production and manufacturing is strictly monitored and tested. We can ensure a consistent level of high quality in the products delivered to our customers.
Okin Seal rubber weatherstrips supplier provides excellent customer service. Including timely technical support, after-sales service, and solutions. We build long-term relationships with our customers, meeting their needs and exceeding expectations.
