Norton Gaskets Private Ltd

Kottivakkam, Chennai, Tamil Nadu

Ring type joint gaskets(RTJs) are designed for high pressure applications. They are available in a variety of forms to suit different flange formats . RTJs can be used for very high and/or fluctuating pressures (up to 1500 bar), depending on the profile selected. Material selection determines use for high temperatures (up to i000C) and in aggressive media. To ensure proper sealing the surfaces of contact between the gaskets and flange have to be carefully processed. The small sealing area and high contact pressure results in excellent sealability.

Norton Gaskets grooved or camprofile gaskets consist of a metal core with concentric grooves and a soft layer of sealing material bonded to both grooved faces. Grooved gaskets are an excellent solution for extreme operating conditions, Non-metal layers ensure that flanges remains undamaged while a metal core ensures the gasket's stability. Grooved gaskets provide the highest level of sealing integrity and have the ability to sea at low seating stress, Very low diffusion level and very high density ensure very low leakage rates, Grooved gaskets are proven to be very effective where temperatures and pressures are constantly fluctuating, They can be used as an alternative for applications associated with metal jacketed gaskets and are ideal choice for heat exchanger services.

• Camprofiles resist pressures up to 40o bar, and depending on the sealing layer gaskets can resist temperatures up to approx, +i000C,
• Gaskets are suitable for applications according to various specifications for flanges (DIN, ASTM, EN, JIS, etc.) and a very wide seating stress range (highly suitable for varying temperatures and pressures, less sensitive to assembly faults, suitable for light and heavy designed flanges),
• Grooved gaskets do not damage the flange surfaces and can be easily removed
• Application
  • Chemical and petrochemical industry
  • Nuclear power stations
  • Steam generation
  • Power plants
  • Heat exchangers

Spiral Wound Gaskets are special semi-metallic gaskets of great resilience; therefore they are very suitable for applications featuring heavy operating conditions. SWG manufactured by spirally winding a V-shaped metal strip and a strip of non-metallic filler material, The metal strip holds the filler, providing the gasket with mechanical resistance and resilience. SWG can be reinforced by an outer centering ring and/or inner retaining ring, The outer centering ring controls the compression and holds the gasket centrally within the bolt circle, The inner retaining ring increases the axial rigidity and resilience of the gasket and acts as a Heat and Corrosion barrier eliminating turbulence between the gasket Inner diameter and the flange bore so avoiding erosion of the flange faces.

Norton Graphite have unrivalled experience in the manufacture and supply of double and triple offset butterfly valve seals. With our expertise in flexible graphite and precision water jet cutting, we can assist valve designers in producing laminated valve seals to suit specific applications.

Flexible graphite, PTFE, Mica Type and traditional gasket materials are all supplied as interlayed materials.
Both disc mounted or body mounted styles are supplied in sizes from 2 (50mm) to 60 (1500mm) with specials available up to sizes 118 (2950mm)
The critical technical requirements of the sealing face are fully understood and achieved through precision clamping and machining of the laminate.
Solid seals, disc/body seats and clamp rings are supplied fully machined to customer drawings.
Capability to machine both interior and exterior surfaces.

• Laminated or solid
• Body or disc mounted
• Graphite layer
• Soft cut layer
• PTFE layer
• Mica layer
• Combination (Graphite / PTFE)

The non-metallic gaskets are produced in several sizes and shapes to meet the most demanding applications. They are available in standard and non-standard gasket design. For non-standard gasket we can provide any shape and size according to customer design or sample.

Non-Asbestos flat flange gaskets are the most typical static gaskets. They are used in large number by various industries and in a variety of applications, especially when low and medium sealing conditions are applied. Non-Asbestos gaskets are made of compressed fibre sheets, graphite, PTFE, mica or rubber sealing materials. Flat-flange gaskets are produced in several different sizes according to standard or customer design. Special type of non-metallic flat flange gaskets are metal eyeleted gaskets, which provide special protection against blowout for the sealing of critical of agressive media. The core of the gasket is usually made of CSF or expanded graphite material, while the U-shaped eyelet is made from different metals.

PTFE eveloped gaskets are produced in several different profiles. Virgin PTFE is used for eveloped materials. Stainless steel, CSF or rubber are used as core material.

• Good chemical resistance to different media withstand temperature
• Temperature resistance upto 26o0C
• Low friction coefficient
• Non-adhesive surface
• Very good electrical insulation and low thermal conductivity.