EPDM rubber seals, silicone gaskets, polyurethane rollers, and precision injection-molded plastic components are essential across automotive, construction, industrial machinery, aerospace, HVAC, and personal care packaging. Flexmer (Jinjiang Yunli Technology Co., Ltd.) engineers and manufactures these high-performance elastomer and plastic components for OEM and industrial customers worldwide - from material formulation through tooling design to mass production, all under one ISO 9001:2015 certified roof.
20+ Years of Precision Manufacturing – From Material Science to Finished Components
Founded in 2002, Jinjiang Yunli Technology Co., Ltd. has grown from a local workshop into a global supplier of high-performance rubber and plastic components.Our vertically integrated manufacturing facility in Jinjiang City, Fujian Province, encompasses mold design, rubber compounding, injection molding, and extrusion production lines.This integration allows us to maintain strict quality control from raw material to finished product - a capability that translates directly into dimensional consistency, material traceability, and supply chain reliability for our customers.
Our components are shipped to clients in over 30 countries across North America, Europe, Southeast Asia, and the Middle East.We serve industries ranging from automotive systems (seals, gaskets, vibration-damping components) and construction (weatherstrips, window seals) to household appliances, industrial machinery, and personal care packaging.
custom EPDM rubber extrusion profiles
Material Selection Guide – EPDM, Silicone, Polyurethane, and Engineering Plastics
Different applications demand different elastomer and plastic formulations. Below is a comparative overview of the primary material families we compound and process in-house.
| Material | Key Properties | Hardness Range | Temperature Range | Primary Applications |
|---|---|---|---|---|
| EPDM Rubber | UV resistant, ozone resistant, weatherproof, low compression set | 30–90 Shore A | -40°C to +120°C | Outdoor seals, window gaskets, automotive weatherstrips, construction profiles |
| Silicone Rubber | Extreme temperature tolerance, food-grade options, excellent flexibility | 20–80 Shore A | -60°C to +250°C | Medical seals, food processing, high-temperature gaskets, EV battery insulation |
| Polyurethane (PU) | High abrasion resistance, tear strength, heavy load capacity | 55–95 Shore A | -30°C to +80°C | Industrial rollers, conveyor wheels, heavy machinery components |
| PVC / TPE | Cost-effective, good flexibility, recyclable options | 40–90 Shore A | -20°C to +80°C | Indoor sealing, furniture gaskets, appliance components |
| NBR (Optional) | Oil and fuel resistant | 40–90 Shore A | -30°C to +100°C | Automotive fuel systems, machinery seals |
All materials are available in custom colors and can be formulated to meet specific environmental, regulatory, or mechanical requirements. RoHS-compliant and REACH-compliant formulations are available upon request.
Custom Manufacturing Capabilities – From Drawing to Production
Flexmer provides complete OEM/ODM support across multiple manufacturing processes:
Rubber Extrusion: Continuous profiles including solid strips, sponge (foam) strips, hollow bulb seals, multi-lip gaskets, U-channels, T-profiles, and D-shaped bumpers.Extrusion allows unlimited lengths with consistent cross-sectional geometry and lower tooling costs compared to molding.
Injection Molding: Precision plastic components for high-volume production - wet wipe caps, industrial housings, custom technical parts. Typical cycle times range from 15 to 60 seconds depending on part geometry and material.
Polyurethane Casting & Molding: Rollers, wheels, and technical components requiring high abrasion resistance and load-bearing capacity.
Tooling & Prototyping: In-house mold design and fabrication. Prototype samples typically available within 7–15 business days from die or mold completion. Tooling costs range from $500 to $5,000 depending on complexity - amortized over production volume.
Dimensional Tolerances: Per ISO 3302-1 Class 1 for extrusion profiles - ±0.10mm for critical dimensions up to 10mm, with proportional tolerances for larger sections. Tighter tolerances available upon request for precision applications.
Quality Control & Testing Standards – ISO 9001:2015 Certified
Every production batch at Flexmer undergoes systematic inspection and testing:
| Test Parameter | Method | Typical Specification |
|---|---|---|
| Hardness | ASTM D2240 | ±5 Shore A tolerance |
| Tensile Strength | ASTM D412 | ≥7.0 MPa (EPDM) |
| Elongation at Break | ASTM D412 | ≥300% (EPDM) |
| Compression Set | ISO 815-1 (22h @ 70°C) | ≤30% (EPDM) |
| Ozone Resistance | ASTM D1149 (200 pphm, 40°C, 72h) | No cracking |
| UV Weathering | ASTM G154 | Minimal fading, no cracking |
| Low-Temperature Brittleness | ASTM D2137 | Pass at -40°C |
| Dimensional Inspection | ISO 3302-1 | Class 1 (±0.10mm) |
Raw material incoming inspection includes Mooney viscosity, cure characteristics, and specific gravity verification. In-process dimensional monitoring uses laser micrometers and optical measurement systems. 100% visual inspection for surface defects is performed on all finished products.
Industry Applications – Where Our Components Perform
Automotive & Transportation: Door weatherseals, trunk seals, window glazing channels, hood seals, bus and railway compartment gaskets, EV battery pack enclosure seals.EPDM's resistance to automotive fluids, temperature cycling, and UV exposure ensures service life exceeding 10 years in exterior applications.
Building & Construction: Commercial window and door glazing seals, curtain wall gasketing, storefront framing weatherstripping, roof membrane flashings, expansion joint seals.EPDM's ozone and UV resistance prevents hardening and cracking in high-exposure facade applications.
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Industrial Machinery: Machine enclosure sealing, vibration dampening mounts, conveyor system edge seals, pump housing gaskets.EPDM's resistance to water, steam, and mild chemicals supports reliable operation in harsh environments.
HVAC & Electrical Equipment: Air handling unit gaskets, duct sealing strips, electrical enclosure door seals, control cabinet weatherproofing, solar panel mounting system gaskets.
Personal Care & Packaging: Precision injection-molded wet wipe caps, closures, and packaging components.High-volume production with consistent dimensional accuracy and fast cycle times.
Aerospace: Custom-engineered seals and gaskets meeting stringent performance and weight requirements.
Frequently Asked Questions
Q: What is the minimum order quantity (MOQ) for custom rubber or plastic components?
A: MOQ varies by manufacturing process and part complexity. For extrusion profiles, we support low MOQs starting from 500 meters. For injection-molded components, typical MOQs range from 1,000 to 5,000 pieces. Prototype quantities are available for testing.
Q: How long does tooling development and sample production take?
A: Tooling for extrusion dies typically takes 7–15 business days. Injection molds require 15–30 days depending on complexity. Prototype samples are shipped within 3–5 business days after tooling completion. Mass production lead times range from 2–4 weeks for initial orders.
Q: Can Flexmer develop custom rubber compounds for specific temperature or chemical resistance requirements?
A: Yes. Our in-house compounding lab formulates EPDM, silicone, and other elastomers to meet specific hardness, temperature range, chemical resistance, and regulatory requirements (including food-grade, medical-grade, and RoHS/REACH compliance).
Get Your Custom Component Solution – Engineered to Your Specifications
Submit your CAD drawings, 3D models, or technical specifications today. Our engineering team will provide a complimentary material recommendation, precise tooling quotation, and free factory samples within 48 hours - from prototype development through full-scale production.
Jinjiang Yunli Technology Co., Ltd.
Contact Flexmer Now
Email: sales@flexmer.com
WhatsApp: +86-15959599282
Website: www.flexmer.com
Jinjiang Yunli Technology Co., Ltd. – ISO 9001:2015 Certified Rubber & Plastic Components Manufacturer Since 2002
