Welcome to ZXSEAL Manufacturer of Toilet Tank Seal Solutions
About Us

Shenzhen Zhengxinglong Precision Rubber Co., Ltd.: Empowering Global Bathroom Quality Upgrades with Precision Rubber Seals


About Us


Established in 2013 and headquartered in Bao'an District, Shenzhen, Guangdong—a core manufacturing hub in China—Shenzhen Zhengxinglong Precision Rubber Co., Ltd. is a professional rubber seal solutions provider integrating R&D, production, and sales. With over a decade of deep expertise in the sanitary ware industry, we specialize in developing and manufacturing core components such as rubber seals and gaskets for toilet tank fill valves and flush valves. Our high-precision, highly reliable products provide critical sealing support for global sanitary ware brands.


Core Strengths: Technology-Driven, Quality First


1.Integrated Full-Process Production System

The company operates modern standardized facilities encompassing all production stages—from mold development, rubber compounding, molding, trimming, quality inspection, packaging, and shipping to R&D. This one-stop closed-loop production ensures end-to-end quality control. Through stringent process management and intelligent equipment investment, product dimensional accuracy, aging resistance, and sealing performance achieve industry-leading standards.


2.Internationally Certified, Globally Recognized Quality

Products hold SGS international certification and market access approvals for Europe and America, complying with environmental standards like RoHS and REACH. This enables seamless integration into international bathroom brand supply chains, with exports to over 30 countries and regions including Europe, America, and Southeast Asia. The company serves as a long-term partner for numerous globally renowned bathroom enterprises.


3.Customized R&D Capabilities

Leveraging dedicated R&D workshops and specialized technical teams, we provide tailored sealing solutions for diverse application scenarios—including silent water-saving, high-pressure resistance, and corrosion resistance—empowering clients to enhance product competitiveness.


Core Products & Services


Toilet Tank Sealing Systems: Fill valve seals, flush valve gaskets, O-rings, custom-shaped seals, etc.

Material Compatibility: Supports customization with multiple high-performance materials including EPDM, silicone, NBR, and fluororubber

Application Fields: Smart toilets, traditional toilets, tank component manufacturers, and sanitary ware distributors


Customer Value Commitment


Rapid Response: Samples provided within 72 hours; mass production orders delivered within 15 days

Cost Optimization: Delivering cost-effective solutions through scaled production and lean management

End-to-End Service: Design support to post-sales tracking, building a full lifecycle service system


Future Vision


Shenzhen Zhengxinglong Precision Rubber Co., Ltd. remains committed to its mission of “Sealing Technology, Safeguarding Quality Living.” We continuously invest in R&D innovation and deepen our global footprint, striving to become a benchmark enterprise in the global sanitary ware sealing industry—technologically advanced and service-excellence driven—contributing Chinese manufacturing strength to elevate human bathroom experiences.


Contact Us


Address: Building 23, Second Industrial Zone, Shapuwei, Songgang Subdistrict, Bao'an District, Shenzhen, Guangdong Province

Tel: +86-XXX-XXXXXXXX

Email: mailto:[email protected]

Website: https://zxlseal.com


ZXLSEAL—Building Trust Through Precision Sealing!




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Complete the short form below and a ZXLSEAL sales representative will be in touch.