MCL Unitex


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Flexible Passive Fire Protection Systems, Fire Seals and Fireproof Enclosures

MCL is happy to offer a complete range of consultancy services throughout the initial enquiry and design stages.

MCL House,
Heanor Gate Industrial Park,
DE75 7SW,
United Kingdom
Fax Number

MCL Unitex is a specialist worldwide manufacturer of flexible passive fire protection (PFP) systems, and has over 25 years’ experience in the design, testing, construction and installation of fire seal systems and fireproof enclosures for the oil, gas, petrochemical and refining industries.

The company’s experienced engineering staff may also be called upon to design bespoke solutions and to further manage testing and certification procedures.

MCL is a member of the ISL Technology Group.

Blast-tested passive fire protection (PFP) pipe seals for offshore applications

MCL’s Firetex pipe penetration seal is a versatile and quick-to-install wrap-around system with approvals from A0, H0, A60, H60, H120, J60 and J120, which is intended to suit any pipe-to-sleeve ratio from 15mm to 1,067mm diameter.

Firetex seal and enclosure systems can be seen on hydrocarbon installations all over the world, providing vital passive protection prior to active fire system activation.
A single Firetex pipe penetration seal installation providing A0 rating and movement capability of +/-25mm in all planes.
A Firetex module seal protecting a large duct penetration on the Maersk Dan FG platform.
Jettex pipe sealing system under test at the HSE laboratory in Buxton, Derbyshire.
Firetex enclosure system applied to valve and actuator on an FPSO production deck.

Our seals have been successfully tested to maintain their stability, integrity and insulation properties and are able to withstand blast overpressures of up to 1.35bar(g), while accommodating movement of +/-25mm in any plane as standard.

Tailored solutions can be constructed on request for applications where frequent excessive movement may be involved, such as our Bellows seal system featuring a convolution structure to facilitate axial movement.

Other bespoke devices such as MCL’s Offset seal are also available, which has been specifically designed to tolerate greater-than-average movement between the pipe and sleeve.

Lloyd’s certified skirt sealant products for hazardous worksites

Firetex skirt seals have proven to deliver heavy-duty, cost-effective protection in both module-to-module and module-to-deck scenarios.

Our skirt sealing products also provide protection from A0 through to H120 for large rectangular ductwork penetration seals, and have been extensively field-tested to ensure safeguarding from blast overpressures of up to 1.16bar(g).

Bespoke wrap-around PFP seal systems for offshore oil and gas rigs

Our Jettex range of seal products are enhancements of the Firetex range of products.

The seal systems maintain their hydrocarbon fire protection properties, but are strengthened further with a second element to protect against the additional mechanical forces of a jet fire hazard.

An additional third element is also added in our J120 sealant systems, in order to deliver the most comprehensive protection currently possible on the market.

In cases where our standard solutions might not meet your project’s specific technical requirements, MCL Unitex is able to design and develop seal products to meet your individual needs.

IMO-approved fireproof enclosures to protect critical equipment

MCL’s fireproof enclosure systems are based on a similar material technology to our sealant products, but with the addition of greater silica fibre blanket thicknesses. These enclosure systems are intended to protect critical equipment such as valve actuators in the event of hydrocarbon fire hazards and potential jet fires.

Normally manufactured as a close-fitting jacket, the enclosure is specifically designed to meet client specifications, which ultimately dictate the period of protection and the limiting cold face temperature of the protected item.

Considerable testing has been undertaken over many years and test data has been used as the basis of our predictive software program Calpro. This facility allows us to better analyse customer requirements and predict performance outcomes.

MCL Unitex seal and enclosure systems are independently tested by IMO-approved, third-party test houses.

Throughout testing MCL’s systems have maintained their integrity, stability and insulation properties, and accordingly carry certification issued by Lloyd’s Register of Shipping, Det Norske Veritas (DNV) and / or the American Bureau of Shipping (ABS).

The Firetex range of penetration seal systems has been subjected to independent blast over-pressure procedures, in addition to hydrocarbon furnace fire testing, and has proved its ability to maintain stability and integrity in blasts of up to 1.35bar(g).

Our systems have also been subjected to jet-fire testing and carry further approvals up to J120, following the establishment of an internationally approved test methodology.

ISO 9001-compliant fireproofing solutions for marine environments

At MCL Unitex we manufacture our seal and enclosure systems to strict quality control procedures, in accordance with the requirements of ISO 9001. Formal accreditation is held through BSI, which audits our operations annually.

Copies of our certificate and quality manual are available on request and any client audit is welcomed.

Firetex seals and enclosures are multi-component systems made from ceramic and silica high-temperature-resistant cloths, glass cloths, insulation felts and blankets, metal foils and high grade stainless steels.

Silicate fibre blanket products are also employed, which have a patented fibre formulation giving enhanced solubility characteristics in the human body.

These component parts have been proved to be totally innocuous under fire conditions. COSHH data sheets are available on request.

Consultancy and installation services for PFP seals and enclosures

As an industry leader in PFP sealant solutions, MCL is happy to offer a complete range of consultancy services throughout the initial enquiry and design stages.

Our qualified and fully trained personnel are also happy to provide onsite assistance and management during the manufacture, supply and installation of PFP pipe seals, module seal systems and enclosures, in order to ensure these procedures are carried out as efficiently as possible

Press Releases

  • MCL Unitex Introduces Pipe Clip and Sleeve Clip Insulation Covers

    UK-based insulation solutions provider MCL Unitex Ltd is pleased to announce that the company has expanded its range to include ‘Pipe and Sleeve Clip Insulation covers’ for integration with its popular Lloyd’s Register (LR) A60 H60 and H120 rated pipe penetration seal kits.

  • MCL Develops Customised Sealing Solutions

    UK-based fire protection specialist MCL is pleased to announce it has designed and fabricated a new module sealing solution to fit customers bespoke requirements for the Johan Sverdrup Project.

  • MCL Renews Annual Achilles Certification

    MCL Unitex is pleased to announce it has renewed its registration with Achilles JQS for another year, allowing the company to continue supplying its goods and services to the oil and gas industry across Scandinavia.

  • Successful Blast Testing at HSL Buxton UK

    In collaboration with customer requirements, MCL Unitex developed, manufactured and successfully blast tested a unique prototype Double Sided Jet Fire-Resistant Fire Seal.

  • MCL Unitex and Ecosse Global UK Partnership 2014

    MCL Unitex draws on more than 50 years' experience in the Design and supply of passive fire protection solutions for offshore oil and gas platforms, FPSOs, petrochemical and refining industries all around the world and we are pleased to announce the new partnership between MCL Unitex and Ecosse Global UK for passive fire protection solutions.

  • MCL Complete Delivery of Fire Seal Package to Hyundai

    MCL is pleased to announce the successful completion of a major ‘design, manufacture and supply’ contract, supplied on time and on budget, to the Hyundai Heavy Industries construction yard in Ulsan, South Korea. The USAN FPSO was commissioned by French supermajor Total and will be locate

  • New Partners for MCL in Kuwait

    After many successful years of MCL’s partnership with United Engineering Industrial & Trading Establishment (UNETCO), we were greatly saddened by the passing of our good friend Mr Nabih Nakhoul in June 2010. His company was later dissolved and our agency agreement terminated. Followi

  • MCL to Provide Rigid Enclosures for Flexifrance

    Technip’s flexible pipe manufacturers Flexifrance, formerly Coflexip, have once again turned to MCL Unitex to design, manufacture and supply their stainless-steel fireproof enclosure system to protect their hose end fittings. These unique enclosures are manufactured in high grade stainless steel

  • MCL Confirms OSEA Exhibition

    The world’s demand for energy shows no signs of abating although oil prices have recently experienced great volatility. According to a report by the Economic Development Board (EDB) of Singapore, the long-term prospect looks positive as Asia Pacific and the Middle East are expected to lead the in

  • MCL Awarded Module Sealing Project for Markhus

    Markhus is a Norwegian engineering company, based in Kristiansand, specialising in offshore living quarter modules. The company was established in 1984 and has over a period of more than 20 years in business-acquired substantial know-how and engineering experience in offshore modules.

MCL Unitex Ltd
MCL House
Heanor Gate Industrial Park
DE75 7SW
United Kingdom

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