China Topper Valve Packing Seal Kits Co., Ltd. is a professional manufacturer of API-standard industrial valves, sealing gaskets, and packing solutions, dedicated to delivering products that perform with reliability in the most demanding environments.

Our portfolio includes gate, globe, and ball valves for critical applications, engineered with advanced low-leakage graphite packing and superior resistance to extreme pressures and temperatures. Complementing these, our sealing gaskets and packing materials are designed to withstand chemical corrosion, thermal cycling, and mechanical stress. All products undergo rigorous third-party testing and hold internationally recognized certifications, including API 622, API 624, API 641, ISO 15848-1, and TA-LUFT, issued by institutions such as TüV SüD and TüV Rheinland.

From the outset, we invested in pioneering research on low-emission sealing technologies to solve leakage challenges in high-risk environments. Through partnerships with leading universities and research institutes, we studied friction, wear, and sealing behavior—efforts that led to our first TüV-witnessed API 622 certification. To date, more than 500 valve models, ranging from 1/2 inch to 20 inches and pressure ratings from 150 LB to 2500 LB, have been tested under conditions spanning from cryogenic -196°C to extreme 400°C, ensuring real-world reliability.

At Topper, innovation extends beyond production—it is rooted in science. We focus on enhancing sealing surface coatings, advancing material performance, and improving long-term durability. Our in-house team of specialists in engineering, materials science, and automation work collaboratively to develop smarter, more dependable valve solutions. By bridging academic research with industrial application, we deliver products that strengthen safety, efficiency, and durability across industries worldwide.

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