Sealing material is any substance that is used to seal joints or fill cracks in a porous surface. It seals any gaps, thus shutting out heat, water, noise or vibration. Sealing material comprises from 45% to 90% by weight exfoliated graphite, from 5% to 20% by weight thermosetting resin and from 5% to 50% by weight fibrous filler which is heat resistant at 250 degree C. the fibrous filler has fibers atleast 90% of which have a fiber length of less tan 200 .mu.m, and an aspect ratio of less than 10:1.

It is used to seal valves, pumps, reaction vessels, air duct, borehole, wells, etc. The most basic requirements to understand while choosing a seal are pressure, temperature, dimensions, and fluid media to be sealed. Temperature conditions greatly affects the work. The running friction of the seal itself can cause local temperature spikes if it is not effectively dissipated by the fluid or the housing. Specifying a seal for an application is always a matter of balancing various characteristics. In dynamic applications, the most common consideration is friction versus leakage control.

Materials
Flexicarb Graphite Sealing Material
It is a pure exfoliated graphite material exhibiting excellent sealing characteristics, withstanding a wide range of temperatures, pressures and chemicals. This is a homogenous material free of respirable fibers, binders and additives. It is chemically inert. Its low permeability and chemical resistance make it an ideal choice as a sealing material.

Polyurethane
It is a sealing material known to be the most suitable for joints in painted materials and have been used on painted office buildings, apartment buildings, shopping centers and schools.

Vinyl
It is a sealing material used generally in air duct seal. It remains rubbery and never cracks. It sticks to the holes in the air duct without coating the rest of the duct. It is safe to use and is tested to last over 10 years without failure.

S-Ecopur
It is an ideal sealing material for dry running conditions, high sliding speeds, high-pressure dynamic applications, reduction of breakout forces and water based fluids.

Bitumen
It is a stable material for most minor joint and crack sealing. It has increased stickability and enhanced friction properties.

Cement
It is widely used as a sealing material in annulus and borehole walls.

Glass
It is used as high temperature sealing material for fuel cells.

Neoprene
A general purpose closed cell industrial grade rubber having good resistance to ozone, fuel oils and fats.

Fluoroelastomer
It is a dimensionally stable sealing material with the best combination of products that can contribute to a longer seal life and uninterrupted sealing service demanded universally by the automobile industry.

Oil Seals
Oil seals finds wide application in various sectors of the automobile industry. These come in a wide range of standard and non-standard designs.

Marble Silicon
It is one component joint sealing material on basis of silicon rubber which hardens in contact with atmospheric humidity. No discoloration in the contact area. It is used for expansion and connecting joints.