Superior Advantages of Custom Rubber Sealing Strips from Weixian Dongsheng Rubber & Plastic Seals Co., Ltd.

Founded in 2009 and located in Weixian, Xingtai City, Hebei Province, a core industrial cluster for rubber and plastic products in North China, Weixian Dongsheng Rubber & Plastic Seals Co., Ltd. is a certified technology-oriented SME specializing in R&D, customized production and global supply of diversified rubber sealing strips for construction, automotive, machinery, shipbuilding and electrical equipment sectors. With over 17 years of focused manufacturing experience, the factory has built outstanding competitive edges in customized sealing strip production from R&D, mold development, raw material configuration, full-process production to strict quality control, becoming a trusted OEM & ODM custom sealing partner for domestic and overseas purchasers.

1. Powerful Independent Customization & In-house Mold Development Capacity

Customization is the core competitiveness of Dongsheng’s sealing strip business. Different from regular manufacturers relying on outsourced molds, the company owns an independent mold workshop and professional tooling engineering team capable of self-developing all extrusion molds based on customers’ drawings, physical samples or personalized performance parameters. The factory has accumulated thousands of mature mold specifications covering EPDM solid strips, sponge foamed seal strips, silicone rubber strips, PVC sealing profiles, flame-retardant and oil-resistant customized strips, water-expansion rubber gaskets and other multi-category products.

Clients can freely customize cross-section shape, dimensional tolerance, rubber hardness (Shore A 30–90), surface color, adhesive coating and functional additives as required. Small-batch trial order and bulk mass production are both available, which efficiently meets diverse personalized demands from small equipment manufacturers to large construction engineering enterprises. Rapid mold opening shortens the sample lead time to 3–7 working days, greatly accelerating customers’ new product launch progress.

2. Diversified Premium Raw Material Matching & Formulation R&D Strength

As a local high-tech SME certified by Hebei provincial authority, Dongsheng owns proprietary raw material formulas and strictly selects eco-friendly base materials including EPDM, food-grade silicone, NBR nitrile rubber, environmental PVC and TPE elastomer complying with RoHS and REACH standards for export orders. Its in-house technical laboratory optimizes rubber formulation targeting specific working conditions: anti-ozone aging for outdoor door & window sealing, high/low temperature resistance (-60℃~150℃) for automotive sealing, oil & chemical corrosion resistance for industrial equipment gaskets, and flame retardant formulation for electrical cabinet seals.

Full raw material traceability management is implemented: all incoming rubber materials go through pre-production inspection to reject unqualified raw stock, fundamentally stabilizing finished product elasticity, compression set resistance and long-term weather-proof performance, effectively reducing post-installation leakage and frequent replacement costs for end clients.

1. Inquiries get a response within 12 hours.
2. We are a professional manufacturer with competitive pricing, and we accept all DEM/ODM orders.
3. Our after-sales team provides 24/7 technical support; issues are addressed within 24 hours.
4. Precision quality, on-time delivery, tailored service.