High-performance custom extrusion profiles engineered for OEM automotive assemblies
Technical expertise in polymer formulation, microwave vulcanization, and co-extrusion technology
Zhejiang Haala Automotive Parts Co., Ltd. (operating alongside manufacturing hubs such as Hebei Ruiyuan Automotive Parts Co., Ltd.) represents a premier medium-sized private industrial enterprise specializing in scientific research, advanced polymer development, continuous extrusion molding, and international marketing of automotive sealing systems.
Strategically located in Matun Industrial Zone, Qinghe County—China's famed rubber and auto parts manufacturing cluster—our facilities integrate raw material compounding, precision mold design, CAD/CAM metal matrix manufacturing, continuous vulcanization, and finished component assembly.
Our technological architecture relies on state-of-the-art continuous EPDM microwave vulcanization lines, heavy-duty flat vulcanization presses, precision plastic profile extruders, and fully automated corner-splicing systems.
Engineered compounds designed to meet rigid NVH (Noise, Vibration, Harshness) and sealing criteria
Specialized primary and secondary door seals, including E-type, P-type, D-type, and U-channel profiles. Engineered with sponge EPDM and solid rubber co-extrusion with built-in steel mesh or steel wire skeletons for exceptional grip and dynamic sealing.
Custom glass sliding groove channels, flocked weatherstrips, windshield encapsulation profiles, and glass pressure strips. Features electrostatic flocking surface treatment to minimize friction coefficient during window rolling operations.
Advanced three-composite (Dense EPDM + Sponge EPDM + Steel Carrier) and four-composite structures. Designed for structural stability, anti-aging, UV resistance, and severe temperature fluctuations from -40°C to +120°C.
Heavy-duty container door frame seals, refrigerated truck door gaskets, electrical cabinet sponge rubber strips, fireproof intumescent seals, and flame-retardant silicone tubing for industrial, medical, and architectural applications.
Modified PVC sealing strips, aluminum alloy door/window gaskets, plastic steel window seals, glass curtain wall weatherproofing, and self-adhesive foam strips providing sound dampening and thermal insulation.
Extensive line of molded rubber parts, mechanical seals, custom vibration isolation pads, silicone pipes, wire-wrapped hoses, automotive air/water/oil delivery hoses, and high-clarity transparent silicone tubing.
Rigorous physical properties verified via international ISO and ASTM standard testing
| Polymer Type | Hardness (Shore A) | Tensile Strength (MPa) | Thermal Range (°C) | Ozone Resistance | Primary Application Scenarios |
|---|---|---|---|---|---|
| Dense EPDM | 60 - 85 | ≥ 10.5 | -40 to +125 | Excellent (100 pphm) | Structural pinch welds, outer window channels, skeleton cores |
| Sponge EPDM (Foam) | 15 - 35 (Density 0.4-0.8g/cm³) | ≥ 2.5 | -40 to +120 | Outstanding | Door bulb seals, trunk seals, noise dampening gaskets |
| TPV / TPE Elastic Rubber | 55 - 90 | ≥ 8.0 | -50 to +135 | Superior | Recyclable automotive trims, lightweight door glass runs |
| Silicone (VMQ) | 30 - 80 | ≥ 7.0 | -60 to +250 | Exceptional | High-temp turbo hoses, engine compartment seals, medical tubes |
| Modified High-Gloss PVC | 65 - 90 | ≥ 9.0 | -25 to +70 | Moderate | Decorative exterior trim strips, anti-collision channel trims |
Why international Tier-1 automotive buyers select our Qinghe manufacturing ecosystem
By anchoring production in the Qinghe automotive cluster, we leverage vertically integrated chemical raw material sourcing, local tooling fabrication, and low-overhead operational structures to deliver 25%-40% cost reduction versus European or North American producers without sacrificing performance.
Our CAD/CAM tooling department utilizes 5-axis CNC machining center technologies to transform client 2D/3D DWG or STEP files into physical continuous extrusion dies in days, accelerating OEM prototype cycles for new vehicle platforms.
Our seal profiles are actively exported across Japan, Germany, the United States, France, Iran, Australia, Türkiye, India, Nigeria, Brazil, Russia, and over 30 additional nations. We understand international shipping standards, custom packaging requirements, and cross-border logistics.
Meeting stringent global automotive environmental and technical mandates
Modern vehicle manufacturing requires strict adherence to international chemical and material safety protocols. Our engineering team ensures all polymer compounding strictly complies with:
To support international Tier-1 and Tier-2 automotive buyers, aftermarket distributors, and coachbuilders, we offer tailored logistics and engineering services:
Innovating for New Energy Vehicles (NEVs), Autonomous Platforms, and Sustainability
With electric vehicles replacing noisy internal combustion engines, cabin aerodynamic wind noise has become highly prominent. Modern sealing strips utilize dual-lip micro-cellular sponge EPDM designs to absorb high-frequency wind turbulence.
Transitioning from traditional thermoset EPDM rubber to fully recyclable Thermoplastic Vulcanizates (TPV) allows vehicle manufacturers to reduce weight by up to 25% while fulfilling circular economy end-of-life vehicle mandates.
Next-generation weatherstripping incorporates conductive rubber anti-pinch sensor channels along automatic power doors, trunks, and RV slide-outs to ensure user safety and prevent damage.
From passenger cars to commercial fleets and architectural structures
Door weatherstrips, sunroof top seals, trunk guards, engine hood seals, and window glass run channels.
Heavy-duty driver cabin door seals, luggage compartment sponge seals, and windshield rubber moldings.
Aluminum alloy frame doors, single-point lock caravan entry door gaskets, and slide-out seal systems.
Glass curtain wall profiles, aluminum window rubber strips, cold storage room doors, and electrical enclosures.
Essential insights for procurement managers and engineering teams
Explore our full inventory of weatherstripping, glass channels, and molded rubber components
Haala Parts
