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I-Cover™ Furnace Seals are designed and fabricated to seal the gaps between individual tube penetrations through the wall or the roof of fired heater systems.
They prevent cold air ingress through the resultant gaps and at the same time are flexible enough to absorb tube or header movements that are expected between cold (shut down) and hot conditions.
As a result, quilted sleeves prevent the phenomenon of metal dusting or catastrophic carburization caused by thermal quenching on the tubes.
These I-Cover™ Tube Sleeves are made of high-temperature resistant cloths which can withstand temperatures up to 900°C and are tailor-made with respect to site conditions and specifications to ensure a perfect fit every time.
A furnace is an industrial heating system designed to generate and sustain high temperatures for processes such as petrochemical processing, metal refining, and power generation. Furnaces operate by burning fuels (natural gas, oil, coal) or using electrical heating elements to produce heat for various industrial applications.
Air ingress, also referred to as tramp air, is entry of ambient air into a furnace or high-temperature system that does not take part in combustion, leading to disruption of combustion efficiency, increasing fuel consumption, and reducing overall performance. This occurs due to gaps, cracks, or poorly sealed components. This phenomenon is common in industrial furnaces operating under negative pressure, such as crude distillation furnaces, reformer furnaces, and boilers.
Efficient furnaces reduce fuel consumption, lower operating costs, and extend equipment lifespan while maintaining optimal process performance. Proper insulation and sealing ensure maximum heat retention, stable combustion, and consistent output quality.
In order to design and fabricate I-Cover Furnace Seals that align with our clients’ requirements, we require details such as:
These details are essential for ensuring optimal design and fabrication in our factories before shipping the final product to our clients.
Expandable seals for multi-tube connections, allowing movement without heat loss.
Flexible high-temperature fabric seals for piping and duct outlets.
Accommodates thermal expansion while preventing heat leaks.
Ensures airtight insulation around high-temperature gas flow points.
I-Cover™ offers custom-designed insulation for inlet/outlet tubes, expansion joints, and multi-tube configurations, effectively preventing leaks and heat loss. It creates an airtight thermal barrier to maintain consistent furnace temperatures, enhances combustion stability by blocking excess oxygen intake, and reduces oxidation, uneven heating, and thermal inefficiencies. I-Cover™ also absorbs extreme axial and lateral movements, protects against thermal stress and premature wear, improves equipment reliability, and minimizes maintenance and downtime. Its easy installation and removal further reduce plant downtime.
Klay’s I-Cover Furnace Seals eliminate air ingress and retain heat in critical furnace zones, maintaining a stable environment, enhancing combustion efficiency, and reducing fuel consumption. Made from high-temperature-resistant fabrics (up to 900°C) and featuring flexible designs like quilted sleeves, telescopic seals, and bellows, they absorb extreme axial movements and thermal expansion. Easy to install and remove, they lower maintenance needs, extend equipment life, minimize energy loss, and support long-term operational efficiency.
Protect your furnace from air ingress with Klay’s high-performance insulation solutions!
