Based on high performance reinforcing fibres with
elastomeric binders, our sheet materials and gaskets have
been selected to cover a wide range of industrial, process
and manufacturing applications; providing sealing
performance with a variety of specifications, covering an
array of temperature and service conditions. The careful
selection of our business partners has established SEP as a
premier independent supplier and gasket cutter of superior
industry recognised brands such as: KlingerSil, Novus, Lamons and Flexitallic (please see the compressed fibre gasket materials section below for more information).
With heightened awareness of
safety and environmental issues, reducing emissions from
flanged assemblies has become a major priority for
industry. It is therefore crucial that the correct material
is selected and installed appropriately, to achieve a safe
and reliable seal.
Material guidance from our
‘Select Range’ is available from the ‘Material Selection
Directory’ on pages 10 & 11, and the ‘Chemical Resistance
Charts’ on pages 19 to 22. Please consult our technical
team at SEP for further options, or if any doubts exist to
a specific materials’ suitability.
Steam is a powerful hydrolyser and is one
of the most difficult mediums for a gasket material to
seal, as such additional care should be exercised through
product selection. Of particular importance is the degree
of thermal or pressure cycling expected in service, as the
elastomeric binders within the materials can become
brittle. For this reason we recommend the use of our
graphite sealing products on pages 13, 14, 15 & 18 for
cycling steam duties.
Temperature service below -40°C will also
harden the elastomeric binder in the compressed fibre
materials. To ensure safe service of these materials at low
temperatures we recommend that:
• the gasket is fitted dry;
• the gasket is fitted at room temperature;
• the gasket is not re-torqued once in service.
Thickness is important and a given material should
be selected as thin as possible, yet sufficiently thick to
accommodate surface imperfections and irregularities of the
flanges. A thinner gasket requires less load to achieve a
tight seal, it can accommodate higher gasket loads and has
better torque retention properties which helps maintain a
good seal throughout the lifetime of the gasket.
of a gasket, along with its thickness has a significant
effect on the maximum permissible gasket stress; we
recommend a minimum thickness to width ratio of 1/5.
Storage conditions of our compressed fibre sheet
and gaskets will ensure a useful minimum life of 5 years.
We recommend to store flat at: • room temperature below
25°C; • away from sources of UV/Natural light; • dry
(humidity levels <60%).
Compressed Fibre Gasket Materials
Compressed Fibre Material is a compressed non-asbestos sheet gasket material produced from a combination of aramid and other synthetic fibers and bonded with nitrile rubber (NBR).
It is a very good general service gasket material and is often used in applications including air, water, steam, organic and inorganic acids, alkalis, general chemicals, petroleum and refrigerants.
Specialised Engineering Products are a supplier and gasket cutter of superior
industry recognised brands such as: KlingerSil, Novus, Lamons and Flexitallic and Phoenix.
For more information on a selection of the different grades available, please select a material from the options below.