TEFCAN is made of 100% pure PTFE, expanded via a unique process into a consistent, highly fibrillated structure. Upon compression, the fibrils lock together to form a strong, uniform material that is impervious to gases and liquids. The material is completely unaffected by virtually all media and is incredibly resistant to creep, relaxation and cold flow inherent in other gasket materials, especially virgin, or filled, PTFE.

The compression characteristics of TEFCAN are very different to those of regular PTFE. All forms of TEFCAN are flexible and stable, even under extremes of temperature and pressure, whilst maintaining their inherent high tensile strength and structural integrity, that prevents relaxation and cold flow.

TEFCAN Sealants conform to irregular shapes and surfaces. Once compressed, they produce a tough, inert, long lasting gasket that seals against extremes of temperature, pressure and corrosive media, where conventional materials will break down. Operating throughout the pH range, resistant to thermal cycling, non- contaminating and FDA suitable, TEFCAN materials can be used in any industry, sealing the simplest to the most difficult of gasket applications.

With conventional gasketing materials, tests have shown flanges to be responsible for the majority of fugitive emissions from industry. Meeting environmental regulations and reducing product loss means significantly lower flange emissions. TEFCAN provides an extremely tight and secure seal for controlling emissions and is suitable for use on a plant-wide basis.

Specification of TEFCAN material, in or throughout your plant, will significantly reduce inventories and costs whilst maintaining gasket performance, reliability and life.

Service Limits

All TEFCAN Sealants offer the following exceptional service capabilities:-

Gasket Temperature: -240 deg.C to +310 deg.C
(-450 deg. F to + 600 deg.F)

Internal Pressure: Full vacuum to 3,000 psi.

For fine faced flanges, pressure range could be extended to reach 5,000psi.

PH Value (of media): 0 - 14 except for molten alkali metals and elemental fluorine.

TEFCAN Sealant Range

TEFCAN material is extremely versatile. This expanded PTFE is available in various product types, forms and shapes. Each TEFCAN product has superior sealing and gasketing properties for use in a broad range of applications.

TEFCAN Universal Joint Sealant

Expanded PTFE in cord form with a self-adhesive backing strip for ease of installation. The superior and cost effective alternative to standard gasket sheeting. TEFCAN Joint Sealant is ideal for complex or large gaskets and for re-sealing damaged, worn or distorted flanges.

TEFCAN Sheet Gasketing

This technologically advanced gasketing material provides all the advantages of PTFE in a pure expanded form that resists cold flow. Flexible and economical, it is fast and easy to cut and install. Supplied as pre-cut gaskets or in sheet form to cut on site as required.

TEFCAN Gasket Tape

High-performance, flat gasketing material for applications requiring a strip or full-face gasket. Combines the benefits of TEFCAN Joint Sealant and Sheet Gasketing to offer flat-sheet, strip gasketing to create gaskets with minimal waste. Adhesive-backed for ease of installation.

TEFCAN Vessel Lid Seal

Thick, conformable, flange gasketing tape of pure expanded PTFE. Specially designed for large lid or cover seals, particularly with uneven or damaged surfaces, or that require easy compression of the gasket.

Special Shapes

TEFCAN Joint Sealant is also produced in various forms apart from the standard oval section. Available as square, rectangular, round and V shaped to fit all kinds of flanges, or sealing surfaces, that have particular configuration, slots, grooves, or special requirements. TEFCAN may also be constructed in rigid, insertable gasket form for sealing plain or raised-faced flanges in pipe-lines.

Joint Sealant

Vulcan Engineering Ltd.
Unit 3 Southwest Centre,
Troutbeck Road,
Sheffield
S8 0JR
UK