Flexitallic Products

Henry Gallacher Ltd. is a Key Allied Distributor of Flexitallic Products

Since 2002, Henry Gallacher has been an Allied Distributor for Global Gasket Manufacturer Flexitallic. As a result, we are able to advise on and supply unique products such as the Change Gasket, Thermiculite High Temperature products, the new Corriculite gasket and a full range of I-Flex Flange Insulation Kits. Flexitallic, supported by Henry Gallacher Ltd, are always at the forefront of sealing technology and our technical expertise and close links mean that we are always able to supply the latest products as they arrive on the market with confidence.


A breakthrough in both heat and chemical resistance, Thermiculite® High Temp gasket materials are rated for temperatures from cryogenic up to 1000ºC and have passed the API 607 fire test.

Thermiculite® sealing materials withstand high temperatures in critical service, corrosive environments and are free from oxidation.

Due to our unique formulation, we are able to offer Thermiculite® as a sheet material, as a filler for spiral wound gaskets, as a facing for kammprofiles and also in many of our other product lines.

We have also developed a range of valve stem packings, which utilises Thermiculite® technology.

Thermiculite® is suitable for replacing aramid, glass, and carbon fibre; PTFE and graphite gaskets in a number of industrial applications.

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Change Gasket

When we invented the spiral wound gasket in 1912 there was nothing like it. 100 years of innovation later, we introduce the Change gasket. And again there’s nothing like it.

Change™ has become the most significant development in the gasket and sealing industry in the past five years with more than 50,000 sold into sectors such as Steel, Power, Chemical, Refining, and Pulp and Paper, around the world.

Developed by Flexitallic in direct response to customers’ long-term heat exchanger sealing problems, Change™ is a highly-resilient metal-wound gasket, designed to deliver the most dynamic static sealing technology ever.

Manufactured using proprietary equipment, Change™ has a proven track-record showing it outperforms conventional gasket technology in challenging environments, especially in applications with mechanical and thermal cycling conditions.

It has also achieved independent industry accreditation from TA Luft for its ability to deliver the tightness of a Kammprofile with the recovery of a Spiral Wound Gasket.

This is achieved through the application of a unique metal spiral profile, which is more advanced than those found in standard gaskets. This profile, combined with a laser welding process, facilitates the construction of a robust and dynamic seal.

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Responding to customer demands for an improved material with strong anti-corrosion characteristics Flexitallic has created Corriculite™ – a filler material for spiral wound gaskets specifically designed for use in corrosion-sensitive environments, such as seawater and hydrocarbon services, across a number of industries, including oil and gas, power and marine.

This revolutionary, non-conductive filler material provides sealing performance and corrosion resistance unlike any other gasket material on the market. Comparative tests show Corriculite™ delivers corrosion protection and sealing properties that far exceed other materials currently available.

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Ring Type Joints (RTJ)

Ring type joints excel in high-pressure applications such as oil and gas exploration and production. RTJs are also used on valves and pipework assemblies in refineries and other process industries.

Available in both oval and octagonal profiles, standard style R ring type joints are manufactured to meet both API 6A and ASME B16.20 sizes and ratings. Also available are Style RX ring type joints which energizes on assembly. This type is designed to fit the same groove as a style R therefore making them interchangeable. For very high pressures, often found in sub-sea wellhead and Christmas tree systems, the style BX is used. Subsea versions of all styles are available with pressure balance holes.

We also design and manufacture special RTJ and bespoke solid metal gaskets for topside and subsea blow-out preventers.

RTJ gaskets can be supplied in a wide range of stainless steels, Inconel alloys and other specialist metals. Coatings available include zinc, Xylan and silver.

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Spiral Wound Gaskets (SWG)

To combat the effects of pressure and temperature fluctuations, flexibility and recovery are essential.

The Flexitallic spiral wound gasket is the precision-engineered solution for flanged joints, heat exchangers, boiler handholes, manholes, and other high-temperature, high-pressure applications—providing resistance to virtually every known corrosive and toxic element.

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Flexible Graphite

Displaying excellent sealing characteristics, Flexicarb leverages the unique heat resistance of Thermiculite® to withstand temperature extremes from cryogenics through elevated levels.

Flexicarb is an exfoliated graphite material with standard grades at 95% to 98% and a nuclear grade available at 99.5%. It can be supplied with an inorganic passivating inhibitor to increase its oxidation and corrosion resistance. Recent experiences and tests have shown that Flexicarb will oxidize over time. Care should be taken when considering the use of Flexicarb foil for applications above 330°C (650°F).

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Flexpro™ Kammprofile

The Flexpro™ gasket fights against flange rotation, bolt stress relaxation, and creep—even under extreme pressure and temperature fluctuations.

We named our Kammprofile gasket Flexpro™ because it offers the compressibility of a sheet gasket for low sealing stress, along with the bolt tightness of a spiral wound gasket—plus the handling ease of a solid metal gasket and its resistance to buckling.

To complete the range, we also offer the Flexidram™, a fire-safe gasket, made specifically for use in the distillery industry, which addresses containment, emission and health & safety issues faced by distillers.

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Sigma® PTFE Sealing Solutions

Sigma® pairs the outstanding chemical resistance of PTFE with enhanced dimensional stability.

Developed for processes ranging from cryogenic temperatures to 260ºC, and suitable for sealing virtually every chemical medium across the entire pH range (0-14). Sigma® range materials contain non-stick properties that aid in an easy removal process after their usage to dramatically reduce the downtime on shutdown.

All components in the Sigma® range are FDA compliant. The material’s clean nature make it ideal for use where product contamination is of concern, such as food, pharmaceuticals and electronics.

The chemical resistance and dimensional stability of the material ensures total sealing reliability and minimises fugitive emissions.

To further enhance our product portfolio, we can also offer expanded PTFE products (ePTFE) sheet sealing material and Gasket Tape.

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I-FLEX – Isolation Kits

Flexitallic has developed the I-Flex isolation system, an insulation gasket to provide electrical and cathodic insulation in pipeline systems, and which has passed the stringent API 6FB Fire Safety test.

We provide a complete product range to limit corrosion in pipeline systems, utilising modified PTFE material Sigma® and our unique high temperature material Thermiculite® – both giving unrivalled performance:

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Compressed Fibre Sheet

The Flexitallic SF , Novus™ and RGS range of compressed sheet fibre and graphite sheet are designed for a wide range of applications where sealing performance and specification are essential.

A comprehensive range of grades are available covering a wide spectrum of applications, chemical compatibility and sealing performance.
Sheet Jointing can be supplied in sheet form or as cut gaskets, either to standard or non-standard dimensions.
Also available in sheet form – Thermiculite® high performance material, developed for use in high temperature applications.

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Flange Rescue Gasket

The Flange Rescue Gasket (FRG) enables bolted joints to be easily and effectively sealed to prevent internal corrosion. The soft SIGMA®inner ring of the FRGs conform seamlessly to the flange face, even if already damaged.

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Compression Packings

Flexitallic can offer a range of pump packings typically used on valve, rotary and reciprocating pump applications and we have an extensive range of sizes available in stock.

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Industrial Hoses

We can offer a wide range of industrial hose and bellows assemblies to cater for chemical, hydrocarbon, hygienic and general industrial markets.

Bespoke hoses assemblies can be manufactured to individual customer specifications, using only the highest quality products.

A comprehensive range of end fittings are available which can be supplied loose or fitted to most hose styles.

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