Spiral Wound Gasket

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Spiral Wound Gasket

We are Spiral Wound Gasket manufacturers, suppliers & exporters in Gujarat, India. Spiral Wound Gaskets are the most frequent metallic gaskets used in factories. A spiral wrapped gasket that is correctly selected and placed can endure high temperatures and pressures, avoiding leaks for the duration of its specified lifespan.

Spiral Wound Gasket Consists of Three Elements

  • Outer Ring - This outer ring is made of carbon steel and is also known as the cantering or guiding ring. It is used to centre the gasket while inserting it into a fastened flange junction.
Spiral Wound Gasket
  • Inner Ring - The inner ring is critical to the gasket because it keeps the windings from buckling within the pipe. When a gasket buckles, some of it is pulled into the pipe. From there, bits of the Spiral Wound Gasket usually move down the pipeline until they become trapped on something. They frequently become entangled in spinning machinery such as pumps. The mess that ensues is referred to as a "bird's nest." Inner rings might help you avoid this difficulty.
  • Sealing Element - As the name suggests, the sealing element produces the seal that prevents leakage. A sealing element consists of both windings and filler material. Most spiral wrapped gaskets in oil and gas refineries will be made of a flexible graphite filler material that can withstand high temperatures. The flexible graphite filler also makes the gasket more tolerant of flange deformation and joint misalignment. Polytetrafluoroethylene (PTFE) is another popular filler material. However, PTFE is not certified for use at high temperatures. Meanwhile, the most common winding materials in refineries will be stainless steel and Monel.

GASKET THICKNESS

  • The standard manufacturing thicknesses for spiral wound gaskets
Sr. No. NOMINAL COMPRESSED THICKNESS INNER/OUTER THICKNESS
1 3.2 mm 2.4-2.6 mm 2.0-2.2 mm
2 4.5 mm 3.2-3.4 mm 3.0-3.3 mm

Key Features

  • Available in a range of materials capable of withstanding high and low temperatures
  • Designed to seal high pressures
  • Maintains high tightness / low leakage under thermal transient conditions
  • Resists corrosion in aggressive media environments

Application Guidelines

  • High pressures and vacuum service
  • Piping flange gaskets, heat exchangers, vessels, boilers, reactors and OEM special equipment
  • Recommended for wide range of chemicals, HP steam, hydrocarbons
  • Suitable for standard ASME, EN, JIS, DIN, PN flanges

MATERIAL

  • Materials Standard materials are type 304 Stainless steel with composite Asbestos/ Graphite/ ePTFE / Mica Fillers.
Metallurgy - Ring OD Colour
304 SS Yellow
316 SS         Green
321 SS Turquoise
347 SS Blue
Alloy 20 Black
Carbon Steel Silver
Hastelloy B         Brown
Hastelloy C Beige
Inconel Gold
Monel Orange
Nickel Red
Titanium Purple
Filler Material - Stripe Colour
Mica Paper Pink
Graphite         Grey
PTFE White
Ceramic Light Green

People also ask

  • What is a spiral wound gasket?
  • Spiral wound gaskets are made of a V-shaped metal strip spirally coiled with a soft filler substance. The metal strip offers exceptional recovery, while the flexible filler ensures good sealing.
  • How to choose a spiral wrapped gasket?
  • The gaskets outside diameter should be lower than the outer diameter of the flange sealing surface, while its inner diameter should be somewhat bigger than the pipe's inner diameter.
  • What is the lowest temperature for a spiral wrapped gasket?
  • Carbon steel is one of three outer ring options for this spiral wrapped gasket. The temperature range is -40°F to 1000°F (-40°C to 540°C).
  • Can spiral wound gaskets be reused?
  • Never use more than one gasket in one flange joint and never reuse a gasket.
  • What is the shelf life of spiral wrapped gaskets?
  • Gaskets should not be kept so tightly that they are damaged. Aging is a factor to be considered. However, each substance ages in its own unique way. Under typical storage circumstances, compressed materials can last three to five years.