COMPRESSED SYNTHETIC FIBRE
JOINTING & GASKETS
JOINTING & GASKETS
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, FLEXITALLIC.
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.
Notes
Steam is a powerful hydrolyser and is one of the most difficult mediums for a gasket material to seal, as such additiona lcare 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 pages13, 14, 15 & 18 for cycling steam duties.
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Low 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
Gasket 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.
The width 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..
Good 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%).
