Cling-Seal Graphite Gasket Sheets: Solving High-Temperature Sealing Challenges in a Petrochemical Plant

Industry: Petrochemical Processing

Application: Flange Sealing in High-Temperature Steam Cracking Units

Challenge:
A leading petrochemical manufacturer in Southeast Asia faced recurring leaks in its steam cracking units, which operate at extreme temperatures (up to 1,200°C) and pressures. Traditional asbestos-based and non-reinforced gaskets failed prematurely due to thermal degradation, corrosion from process chemicals, and pressure fluctuations, leading to costly downtime, safety risks, and environmental compliance issues.

Solution:
Cling-Seal’s Reinforced Flexible Graphite Gasket Sheets were selected after rigorous material testing. Key features that addressed the plant’s challenges included:

Temperature Resistance: Rated for continuous use up to 1,300°C, withstanding thermal cycling without hardening or cracking.
Chemical Resistance: Impervious to hydrocarbons, acids, and steam present in the cracking process.
Reinforced Structure: A 0.15mm SS316L tanged metal insert provided mechanical stability, preventing blowout under pressure spikes.
Custom Sizing: Gaskets were manufactured to precise dimensions (1,200mm diameter) for legacy flange systems.

Implementation:
Cling-Seal collaborated with the plant’s engineering team to:

Conduct a site audit to map critical flange points.
Engineer gaskets with a dual-layer graphite core (3mm thickness) for optimal compression recovery.
Install prototype gaskets in a pilot section of the steam cracker.

Results:

Zero Leakage: After 18 months of continuous operation, the gaskets maintained a 100% seal integrity rate, eliminating unplanned shutdowns.
Cost Savings: Reduced maintenance costs by 65% compared to previous gasket solutions.
Safety Compliance: Met ASTM F104 and API 6FB fire-safe standards, improving plant safety ratings.
Extended Lifespan: Gaskets exceeded 24,000 hours of service life, triple the industry average.

Client Testimonial:
"Cling-Seal’s graphite gaskets transformed our operations. Not only did they solve our leakage issues, but their engineering team’s proactive support during installation and post-performance monitoring was invaluable. We’ve since standardized their products across all high-temperature units."
—Plant Maintenance Manager, Southeast Asia Petrochemical Co.

Why Graphite Gasket Sheets?
Graphite’s layered structure and self-lubricating properties make it ideal for:

Dynamic Sealing: Withstands vibration and thermal expansion in reactors and heat exchangers.
Non-Reactive Performance: Resists corrosion from sulfuric acid, ammonia, and chlorinated solvents.
Easy Handling: Flexible sheets conform to irregular flange surfaces without specialized tools.

Cling-Seal Advantage:

Material Purity: 99.85% graphite content ensures consistent performance.
Quality Assurance: Each batch undergoes laser-based thickness verification and stress-strain testing.
Global Certifications: Compliant with ASME B16.20, EN 1514-1, and ISO 9001:2015.

Beyond Petrochemicals:
Cling-Seal’s graphite gasket sheets are also trusted in:

Power Generation: Sealing boiler feedwater heaters and turbine casings.
Automotive: Exhaust manifold gaskets for heavy-duty engines.
Pharmaceutical: Sterile processing equipment under CIP/SIP conditions.

Conclusion:
Cling-Seal’s graphite gasket sheets deliver measurable value in extreme environments, combining material science expertise with application-driven engineering. By partnering with clients to solve their most critical sealing challenges, we ensure reliability, safety, and operational efficiency across industries.

Contact Cling-Seal Today to discover how our graphite solutions can optimize your high-temperature sealing applications.