In the field of shipbuilding and marine engineering, a reliable sealing system is the key line of defense to ensure the safe and stable operation of facilities. With its excellent performance, the TST seal modular cable and pipe penetration sealing system has successfully passed the certification of international classification societies such as CCS (China Classification Society) and RS (Russian Classification Society), laying a solid foundation for its global development and providing users with a strong guarantee of reliable quality. Today, let us take a deeper look at the certification path of the TST seal sealing system.

The essence of international classification society certification is to verify whether the product can adapt to the extreme challenges of specific sea areas:

CCS certification: It must meet the requirements of Chapter 10, Part 4 of the “Rules for Classification of Seagoing Steel Ships”, focusing on fire protection (1100℃/60 minutes), explosion protection (Ex d IIC T6), and earthquake resistance (50m/s² random vibration) performance;

RS certification: For Russia and some markets, additional requirements are required to pass -60℃ ultra-low temperature test and nuclear radiation resistance test;

Dual value: After passing the certification, the system can be directly applied to special ships such as icebreakers and LNG carriers jointly built by China and Russia without secondary modification.

TST seal’s certification technology breakthrough

Take the strict RS classification society certification as an example, TST seal has broken through two major technical bottlenecks:

Fireproof performance limit challenge

Material innovation: Research and develop EPDM rubber composite materials, which can maintain integrity for 120 minutes and 180 minutes in the flame during a fire according to GB23864 (the standard requires 60 minutes);

Structural design: adopts a peelable variable diameter + building block installation design, passing the RS fireproof test;

Smoke control: The actual measured transmittance of the burning smoke is 82% (the standard requires ≥60%).

Adaptability to extreme environments

High and low temperature cycle test: After 100 cycles of -40℃ (8h) ⇌ 120℃ (8h), the sealing performance has no attenuation;

Deep sea pressure test: simulate 300 meters of water pressure (3MPa) for 24 hours, and the leakage rate is <0.01mL/min;

Vibration durability: passed the European standard (10-2000Hz, 50m/s²) random vibration test.

Imagine that when a 180,000-ton bulk carrier equipped with a TST seal system crosses the Cape of Good Hope, its cable transit system is experiencing the extreme test of a 55°C temperature difference, 12-level wind and waves, and 2,000 vibrations per hour – this is the value of international certification. TST seal uses certification as a fulcrum to leverage the global high-end ship supporting market, making the “Chinese solution” the safety foundation for world navigation.

TST seal, as a leader in domestic pipeline cable transit sealing systems, has passed the formal approval and factory approval of the Russian Classification Society (RS) and the China Classification Society (CCS), and has obtained certificates. At present, DNV, ABS, BV, MED, and RINA approvals are also progressing steadily.

TST seal has currently provided more than 3,000 sets of domestically produced cable pipe penetration sealing solutions for Wison Group in the shipbuilding field, Mingyang Electric in the offshore field, State Grid, China Southern Power Grid, Huadian Group, Datang Group, Three Gorges Group, Dadu River Group in the energy field, and China Railway Construction and high-speed rail, subway and other well-known enterprises in the world such as 1,000+ listed groups, state-owned enterprises, and central enterprises in the rail transportation field.

Protect the safety of life and property and ensure the stable operation of equipment. In the future, TST seal will continue to uphold the concept of customer first and provide global customers with satisfactory and reliable pipeline penetration sealing products and solutions to help ships ride the wind and waves and sail far.