Gaskets are tiny yet the most important elements of a
machinery that prevents leakage of any kind of liquids and gases between two
components. Without gaskets, any kind of machinery is likely to fail due to
leakage. But, for the functioning of these tiny elements, it is important that
the raw materials used to construct them are appropriate and of good quality. It
is the selection of the material that affects every attribute of the gasket
like its aptitude for handling different fluid-containing scenarios, and
integrity of the seal.
It is usually preferred that the gasket be made from a
material that can deform and tightly fill the space it is designed for, thus
covering up for any irregularities. However, there are some gaskets that are
made entirely of metal that rely on a seating surface to accomplish the seal.
On the other hand, there are gaskets that are made entirely of non-metals, or
are semi-metallic in nature. The list of materials used for manufacturing
gaskets include Nitrile, NBR, EPDM, Silicone, Graphite, PTFE, stainless steel
and carbon steel. But, the most commonly used materials from these are listed
below.
Whatever kind of gasket you require for your application,
may it be metallic, non-metallic, or semi-metallic, you can approach Trim
Engineering Services, one of the leading Spiral Wound Gasket Manufacturers in India, who have an expertise in the field of
manufacturing and supplying gaskets of all types since the past 30 years! So,
you can definitely rely upon them without worrying about the quality.
Carbon and metal
Graphite is a material that retains dimensional stability
and seal integrity, even in cases of high temperatures and high pressure. This
is why this material is very commonly used in gaskets used in the aerospace
industry and other cutting-edge domains. Also, carbon fiber reinforcement,
stainless steel wire meshes, Kevlar substitutes, and Teflon additives can be
used to infuse mechanical strength into the product. These reinforced materials
can prove to be ideal solutions for conditions of extreme temperatures and high
pressure, making them suitable for cryogenic applications and other tough
industrial settings.
Polymers
Polytetrafluoroethylene or PTFE products are equipped with
excellent mechanical and chemical properties like not reacting to chemicals,
and superior thermal insulation. This makes the polymer a perfect match for hot
fluids. Other than this, other polymers like Nitrile and Viton are also used,
most frequently in fuel pipe seals and joint seals, as they have the ability to
resist the corrosive effects of petroleum oils. Other polymers that can be used
include toughened plastics and urethane polymers. All these materials can be
graded or fabricated as composites to add more versatility to the polymers.
Non-asbestos
compressed fibers
Gaskets used for high pressure steam systems may contain
asbestos. But, due to the health hazards related to asbestos exposure, non-asbestos
materials are more preferred. When such non-asbestos compressed fibers are
combined with polymer linings, gaskets gain a super-fortified edge such that
they are able to function under huge stresses, so much so that they can handle
super-heated steam and corrosive acids with great efficiency.
