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Rubber manufacturing

Precision Rubber Sealing
Engineered for Performance

Hebei Sinowest Plastic Products Co., Ltd. – Trusted manufacturer of high-performance rubber sealing strips and molded components for automotive, construction, rail transit, and industrial applications.

Global Impact, Proven Reliability

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About Hebei Sinowest

Hebei Sinowest Plastic Products Co., Ltd. is a professional manufacturer of rubber sealing strips and sealing products with a complete R&D system covering rubber formula development, mold design, raw material testing, and advanced manufacturing.

We specialize in producing high-quality sealing solutions for the automotive, rail transit, construction, and industrial sectors. Our commitment to innovation, quality control, and customer satisfaction has positioned us as a trusted partner across global markets.

  • Full in-house R&D and mold development
  • Advanced extrusion and molding processes
  • ISO-standard quality control and testing
Factory interior

Our Product Range

From door and window seals to specialized rail transit components, we offer a comprehensive portfolio of rubber sealing solutions.

Telegraph Seam Series

Telegraph Seam Series

High-resilience rubber strips designed for precise joint sealing in industrial and structural applications.

  • • EPDM/Nitrile options
  • • Custom cross-sections
  • • UV and ozone resistant
Highway Strip Series

Highway Strip Series

Durable expansion joint seals for roadways, bridges, and infrastructure projects.

  • • Weather-resistant compounds
  • • High tensile strength
  • • Long service life
Subway Shield Spool Series

Subway Shield Spool Series

Specialized sealing components for tunnel boring and subway construction.

  • • High-pressure resistance
  • • Abrasion-resistant
  • • Customizable dimensions
TPE/TPV Door & Window Seal

TPE/TPV Door & Window Seals

Flexible, weather-tight seals for residential and commercial glazing systems.

  • • Soft-touch finish
  • • Excellent compression set
  • • Recyclable materials
Color Foam Sealing Strip

Color Foam Door & Window Seals

Lightweight, compressible foam strips in multiple colors for aesthetic and functional sealing.

  • • EPDM or silicone foam
  • • Custom color matching
  • • Low compression load
Molded Rubber Parts

Molded Rubber Parts

Precision-engineered rubber components for automotive, industrial, and appliance applications.

  • • Compression and injection molding
  • • Multi-cavity tooling
  • • Tight tolerance capabilities
Door and Window Curtain Wall

Door & Window Curtain Wall Seals

Integrated sealing systems for high-performance building envelopes.

  • • Multi-functional profiles
  • • Thermal break compatibility
  • • Aesthetic integration
Automotive Sealing Tape

Automotive Sealing Tape

High-reliability seals for doors, trunks, sunroofs, and body joints.

  • • Noise and vibration damping
  • • Water and dust tight
  • • OEM specifications

Materials & Manufacturing Capabilities

Advanced Material Expertise

EPDM Rubber: Excellent weather, ozone, and UV resistance.
Nitrile Rubber: Superior oil and fuel resistance.
Neoprene: Balanced performance in heat, oil, and weathering.
Silicone Rubber: High-temperature stability and flexibility.
Natural Rubber: High elasticity and tensile strength.
PVC: Cost-effective, rigid or flexible formulations.
TPV/TPE: Thermoplastic elastomers for recyclability and performance.

Production Processes

  • Extrusion Process: Continuous production of seals with consistent cross-sections. Capable of co-extrusion and multi-cavity tooling.
  • Molding Process: Precision compression and injection molding for complex 3D parts and prototypes.
  • Quality Control: In-house testing for tensile strength, elongation, hardness, compression set, and environmental resistance.

Frequently Asked Questions

What industries do you serve?

We serve the automotive, rail transit, construction (doors/windows), infrastructure (highway/bridge), and industrial equipment sectors.

Can you produce custom profiles?

Yes, we offer full custom design and mold development services. Provide us with drawings or samples, and we’ll create a solution.

What is your minimum order quantity (MOQ)?

MOQ varies by product type and complexity. Contact us for specific project requirements.

Do you offer samples?

Yes, we provide samples for evaluation. Contact our team to request product samples.

What certifications do you hold?

We maintain strict quality control systems. For specific certifications, please contact us directly.

Get in Touch

Ready to discuss your sealing solution? Contact Hebei Sinowest today.

+861302286008
Changzhuang Industrial Park, Changzhuang Town, Wei County, Xingtai City, Hebei Province

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