POLYPAC Shines at the 7th China International Advanced Materials Industry Expo

Monday, September 8, 2025

The 7th China International Advanced Materials Industry Expo concluded successfully in Harbin from August 30th to September 1st. As an important member of the Guangdong delegation, POLYPAC Seals stood out as a highlight of the expo and attracted wide attention, thanks to its outstanding achievements and innovative products in the field of advanced materials.

DMS Seals Shines at the 7th China International Advanced Materials Industry Expo

During the expo, Chairman Hu of POLYPAC Seals visited the site in person to guide work and conducted in-depth exchanges with numerous domestic and foreign industry peers. Chen Lei, Deputy Director of the Department of Industry and Information Technology of Guangdong Province, also visited POLYPAC Seals' Booth A10 for guidance. The booth was thronged with people, drawing a large number of professional visitors who stopped to consult. Intensive discussions were held around the performance characteristics and application scenarios of the company's high-performance pipe materials, creating a lively on-site atmosphere. In addition, visitors showed great interest in the seals suitable for ultra-low temperature and ultra-high temperature working conditions, and expressed appreciation for POLYPAC Seals' research and investment in new sealing materials.

POLYPAC Seals' brilliant performance at the expo won wide praise from the industry, fully demonstrating its technical strength and brand image. This participation not only built a valuable platform for POLYPAC Seals to communicate and cooperate with domestic and foreign counterparts, but also further consolidated and enhanced its leading position in the industry.

DMS-Seals-Shines-at-the-7th-China-International-Advanced-Materials-Industry-Expo

Looking ahead to the future, POLYPAC Seals will continue to uphold the philosophy of "innovation-driven and green development", continuously increase R&D investment, and commit itself to launching more high-performance and environment-friendly pipe material solutions. In doing so, it will inject strong impetus into the high-quality development of China's advanced materials industry.

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POLYPAC Seals makes an appearance at Xiamen Construction Machinery Exhibition.

FAQ

Products

What is the purpose of the metal spring in a rotary shaft seal?

The garter spring in a shaft seal (e.g., FSKR, SPGO types) provides a constant radial force on the sealing lip. This ensures consistent contact with the rotating shaft, compensating for minor wear, eccentricity, and vibration to prevent lubricant leakage.

What does "AS568" mean?

AS568 is the Aerospace Standard that defines the dimensions for over 360 standard O-ring sizes. It is the most widely accepted sizing system in North America and globally. An AS568 number (e.g., AS568-214) specifies a precise inside diameter and cross-section.

How important is surface finish on the metal parts that contact the seal?

Extremely important. A rough surface will abrade and wear out the seal quickly, causing leaks. A finish that is too smooth can prevent a lubricating film from forming. A typical recommended surface finish for dynamic applications is 0.2 to 0.8 μm (8-32 μin) Ra.

What is the difference between NBR and FKM materials?

NBR (Nitrile/Buna-N): A general-purpose, cost-effective material with excellent resistance to petroleum-based oils and fuels. It has a standard temperature range of -30°C to +100°C (-22°F to +212°F). FKM (Fluoroelastomer/Viton®): A premium material with excellent resistance to high temperatures (up to 200°C+), chemicals, and oils. It is used in more severe environments but is more expensive than NBR.

Can I reuse a seal?

We strongly recommend never reusing seals. Once compressed and used, a seal takes a "set" and its elastic properties are degraded. Reusing it almost always results in a leak. Always install a new seal during any maintenance or repair.

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