TST SEAL MCT Penetration Sealing System: The Preferred Choice for Refining and Chemical Industry Sealing

Building a Safety Defense · Sealing to Protect Energy · Domestic Innovation Shaping the Future

In refining and chemical environments characterized by high temperatures, high pressures, and hazardous media, penetration sealing is a critical link in safeguarding the intrinsic safety of installations and ensuring continuous production.

The TST SEAL MCT modular penetration sealing system precisely meets the diverse needs of the refining and chemical industry. It provides safe, efficient, and durable professional sealing solutions across the entire petroleum refining and chemical value chain, helping enterprises upgrade intrinsic safety and significantly boost operation and maintenance efficiency.

▌Redefining Safety and Efficiency Standards in Refining and Chemicals through Technological Innovation

Developed specifically for the rigorous operating conditions of the refining and chemical industry, the TST SEAL MCT system offers comprehensive performance—including fire resistance, explosion protection, waterproofing, corrosion resistance, vibration resistance, and electromagnetic shielding. It achieves breakthroughs in both safety protection and operational efficiency, meeting sealing requirements across the entire refining process.

1 Six-Dimensional Robust Protection: Solidifying the Foundation of Intrinsic Safety

Built to military-grade standards, the TST SEAL MCT system comprehensively addresses safety needs in refining and chemical environments, ensuring the continuous and stable operation of facilities:

Superior Fire Barrier: Certified to the international A-60 fire-resistance standard, with some products offering up to 3 hours of fire resistance; effectively blocks the spread of fire between zones, buying critical time for emergency response.

Top-Tier Explosion Protection: Certified Ex e IIC Gb (IIC being the highest hazard classification); withstands explosion impacts of up to 40 bar; suitable for high-risk environments involving hydrogen, acetylene, and other hazardous substances; cuts off explosion propagation paths at the source.

IP68-Grade Ultimate Sealing: Features excellent watertight and airtight performance, completely preventing the ingress of oil, gas, toxic fumes, rainwater, and moisture, thereby protecting cable insulation and keeping equipment interiors dry.

High Corrosion and Aging Resistance: Frames are constructed from 316L stainless steel, and sealing modules utilize proprietary EPDM rubber; resistant to acid/alkali corrosion and salt spray in refining zones; passes 1,000-hour salt spray testing; ensures 30 years of stable performance without the need for periodic replacement. Superior Vibration and Shock Resistance: Passes the rigorous GB/T21563 vibration test; effectively absorbs vibrations generated by the operation of pumps, compressors, and pipeline pressure fluctuations, preventing seal gap widening and bolt loosening, thereby avoiding vibration-induced leaks.

EMC Electromagnetic Shielding: Specialized shielding modules deliver shielding effectiveness of 42–63 dB across a wide frequency range (14 kHz–18 GHz), ensuring signal stability for central control systems and smart instrumentation, and eliminating operational errors caused by electromagnetic interference.

1. 2. Modular Design: Revolutionizing O&M Efficiency

Leveraging an innovative modular design, the TST SEAL MCT system transcends the limitations of traditional sealing methods, drastically simplifying O&M workflows and reducing total lifecycle costs for enterprises:

“Building-Block” Installation (50%+ Efficiency Boost): Standardized “plug-and-play” modules eliminate the need for on-site customization or welding; single-sided operation significantly shortens construction and retrofit timelines.

Non-Destructive, Non-Stop Maintenance: Individual modules are independently removable; maintaining or replacing a single cable requires no disturbance to other cables or structural integrity and necessitates no production shutdowns, minimizing the impact of maintenance on operations.

Built-in Redundancy for Easy Expansion: The system features 40% built-in expansion capacity; adding cables later simply requires adjusting the number of modules. A “one-time opening, lifetime use” approach perfectly meets the needs of smart upgrades and capacity expansions in refining and chemical plants.

Optimal Total Lifecycle Cost: Boasts an ultra-long 30-year service life with no maintenance or replacement required, cutting O&M labor and material costs by 70%. Domestic supply ensures rapid delivery and ample spare parts, with a total cost over 30% lower than imported alternatives—delivering a breakthrough in both cost-effectiveness and reliability.

▌ Comprehensive Scenario Coverage: MCT System for the Entire Refining & Chemical Process

The TST SEAL MCT system is precisely engineered to meet the demands of key stages in the refining and chemical industry, addressing specific sealing challenges across various scenarios to ensure full-process coverage:

Process Units and Tank Farms: Suitable for cable and pipeline penetrations in reactor, compressor, pump, and storage tank areas; provides comprehensive protection—including explosion-proofing, leak prevention, and vibration resistance—to ensure stable equipment operation. Central Control Rooms and Cabinet Rooms: Enhanced fire resistance, airtightness, and EMC shielding prevent the ingress of hazardous gases, ensure the safe and stable operation of control systems, and mitigate the risk of signal interference.

Pipe Racks and Cable Trays: Designed to withstand harsh outdoor conditions—including high temperatures, intense sunlight, and corrosion—these systems provide long-lasting seals for dense cable penetrations, thereby reducing the frequency of outdoor maintenance.

Hydroprocessing, Coking, and Ethylene Units: Engineered for extreme environments involving ultra-high temperatures, high pressures, and hydrogen exposure, these solutions effectively prevent seal failure caused by hydrogen embrittlement or media corrosion, ensuring the safety of high-risk units.

Wastewater Treatment and Utilities: Resistant to acidic and alkaline corrosion from wastewater and capable of containing toxic or hazardous gases, these systems ensure environmental compliance and support green production practices.

▌ Safeguarding Refining and Chemical Safety and Enabling Efficient Operations through Professional Sealing

For refining and chemical enterprises, sealing integrity is the baseline for safety, while operational efficiency is the key to profitability. The TST SEAL MCT modular penetration sealing system is more than just a high-quality product; it is a core solution that empowers enterprises to achieve inherent safety, operational efficiency, and cost optimization.