MCL Unitex

Flexible Passive Fire Protection Systems, Fire Seals and Fireproof Enclosures

MCL Unitex, a member of the ISL group of companies, is a specialist manufacturer of flexible passive fire protection systems and has extensive experience in the design, testing, construction and installation of fire seal systems and fireproof enclosures for the oil, gas, petrochemical and refining industries worldwide. Our experienced engineering staff may also be called upon to design bespoke systems and to further manage testing and certification.

Pipe penetration seals

With approvals from A0 to H120, the Firetex pipe penetration seal is a quick-to-install wrap-around style seal to suit any pipe/sleeve ratio from 15mm to 1,067mm diameter. In addition, Firetex pipe penetration seals have been successfully tested to withstand blast overpressures of up to 1.35bar g. In standard form, the seals will accommodate movement of +/-25mm in any plane, but excessive movements can also be catered for. Please call our engineering department to discuss your requirements.

Module seals, ductwork penetration seals and skirt seals

For module/module seals, module/deck seals and for large rectangular ductwork penetration seals, our Firetex skirt seals provide protection from A0 through to H120 and have been proven to withstand blast overpressures of up to 1.16bar g.

Fire protection seal systems

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 with a second element (and a third element for J120) to protect against the additional mechanical forces of a jet fire hazard.

Fireproof enclosure systems

Based on a similar material technology to our seal systems, but with the addition of greater silica fibre blanket thicknesses, the Firetex enclosure system is designed 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 designed to meet client specifications which 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. With this facility we are able to analyse client requirements and predict performance.

Certification of seal and enclosure systems, and penetration seal systems

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).

In addition to hydrocarbon furnace fire testing, the Firetex range of penetration seal systems have been subjected to independent blast over-pressure testing and have proved their ability to maintain stability and integrity in blasts of up to 1.35bar g. More recently, following the establishment of an internationally approved test methodology, our systems have been subjected to jet fire testing and carry further approvals up to J120.

Quality-assured seal and enclosure systems

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.

Contact Details

MCL Unitex Ltd
MCL House
Heanor Gate Industrial Park
DE75 7SW
United Kingdom
+44 1773 761226
+44 1773 711874