We are a manufacturer specializing in the design, development, and production of automotive sealing strips. Belt weatherstrips (also called belt-line moldings, door belt seals, or window belt weatherstrips) are rubber or plastic seal strips mounted along the belt-line of a car door, just below the window glass. They form a crucial part of the vehicle’s sealing system, preventing water, dust, air, and noise from entering the cabin, stabilizing the window glass during its movement, and maintaining a clean, finished appearance for both interior and exterior.
Typically, each car door uses two belt weatherstrips:
Inner belt weatherstrip — along the inside beltline, providing sealing against water, dust and air ingress.
Outer belt molding / weatherstrip — along the exterior beltline, offering weatherproofing and often a decorative or trim finish (chrome bead, stainless-steel insert, or colored molding) depending on design requirements.
Our Belt Weatherstrip Product Range & Services
We supply a comprehensive range of inner-belt & outer-belt weatherstrips, suitable for:
• Passenger cars, SUVs, trucks — various brands and models
• OEM supply or aftermarket replacement
• Custom orders: non-standard profiles, rubber grades, metal inserts, color / finish customization
Services
01
Custom Extrusion & Profile Services
Rubber extrusion (EPDM, PVC, TPV, etc.) with optional metal or wire carriers
Co-extruded or multi-durometer profiles (soft sealing surface + firm carrier backbone)
Flocked or smooth finishes, as per customer requirements
02
Small-Batch to Bulk Production Capability
MOQ and batch size flexible — from small replacement kits to large OEM orders
Quality assurance and inspection on every batch: material certification, dimensional check, durability test
03
Aftermarket Kits & Replacement Strips
Ready-made belt weatherstrip kits for older / classic vehicles (inner & outer belts per door)
Universal or semi-universal strips for retrofit or custom applications
Our Belt Weatherstrips Advantages
01 Effective Seal Against Water, Dust & Air
A well-designed beltline weatherstrip prevents rainwater, road dust, and external air from entering the interior, helping maintain cabin comfort and protecting interior components from moisture and debris.
02 Noise Reduction & Smooth Window Operation
With proper sealing and a flocked or soft-rubber surface, belt weatherstrips reduce wind noise when windows are open or closed, and ensure smooth up/down movement of the window glass without scratching or snagging.
03 Fit, Finish & Aesthetic Appeal
Outer belt moldings often incorporate styling elements — chrome or stainless-steel beads, color-matched rubber/plastic, or a flush design — enhancing exterior look while serving functional sealing purpose.
04 OEM / Aftermarket Replacement & Customization
Ready-made belt weatherstrip kits for older / classic vehicles (inner & outer belts per door)
Universal or semi-universal strips for retrofit or custom applications
Why Choose SGNOI as Your Belt Weatherstrip Supplier
Experienced OEM / Aftermarket Supplier — we have extensive experience in rubber extrusion, custom profiles, and automotive sealing systems.
Material & Quality Flexibility — multiple rubber compounds (EPDM, TPV, PVC, etc.), optional metal/wire carriers, flocked or smooth surface — you get what fits your design or restoration needs.
Custom & Small-Batch Orders Supported — perfect for small shops, classic car restorations, or specialized vehicle refurbishments.
Global Supply & Export-Ready — we handle packaging, export documentation, and support clients worldwide.
OEM-Grade Consistency — we follow strict manufacturing and QC processes to ensure fit, seal integrity, and long-term durability.
If you are looking for Belt Weatherstrips — whether for beltline weatherstrip replacement, OEM supply, or custom extrusion — please contact us with:
Vehicle make & model (or profile drawing / sample)
Required belt type (inner / outer / both)
Material preference (EPDM, PVC, TPV, etc.), carrier (metal insert / wire)
Finish — flocked surface or smooth, color / trim requirements
Quantity required (kits or bulk)
We will respond with a competitive quotation, lead time, MOQ, and shipping details.
