Spiral-wound gaskets offer high resistance to the pressure inside piping.

Dimensionally accurate Spiral Wound Gaskets

TT Gaskets spiral wound gaskets are used for example in power plants, chemical industry and OEM-manufacturing. We offer standard-sized spiral wound gaskets straight from our extensive stock – and thanks to our own machines, tailored gaskets on a fast schedule.

SWGs for demanding conditions

The use of spiral wound gaskets is common in power plants, pulp mills and petrochemical industry. Spiral wound gaskets can withstand higher pressures and temperatures than flange gaskets cut from sheet metal. The sealing part consists of a metal, v-shaped spiral strip and soft sealing material.

With the right material choices, first-class chemical resistance and suitability for both cold and hot circumstances are achieved. SWGs are often provided with an outer guide ring and an inner support ring. A sturdy, metallic structure consisting of three different elements ensures functionality.

Fast delivery shortens downtime

TT Gasket’s new machines produce spiral wound gaskets from small DN15 size up to 4000 millimeters in diameter. We manufacture small batches of gaskets according to your drawings, material requirements and standards. The gaskets are optionally equipped with an outer guide ring or inner support ring – or both.

Depending on material choices, we can manufacture the needed gasket in a day. Maintenance time is shortened, and unnecessary downtime is reduced. Thanks to shorter logistic distances, we can serve a wide range of industries in Finland and elsewhere – including OEM customers, such as engine factories and pump or valve manufacturers. Whether you need an exceptionally sized gasket with fast delivery or a twenty-piece delivery batch of basic gaskets, get in touch!

Read more about TT Gasket’s own production >>


Spiral Wound Gaskets

Various materials can be used in spiral wound gaskets. Carbon steel, AISI 304 (L), AISI 316 (L), Monel or Inconel are used for winding, outer and inner ring. Graphite, PTFE, or Thermiculite are often used as the filler.
Most commonly the outer ring is made of carbon steel, winding and inner ring from AISI 316 (L), and the filler is graphite.

Usually, a spiral wound gasket is composed of an outer ring, winding, filler, and inner ring according to EN 1514-2 type C/I.

In some cases, there is no need for an inner ring or for neither outer or inner rings.

Commonly the thickness of a spiral wound gasket is 3.2/4.5 mm. It means that the outer and inner rings are 3.2 mm, and the tape is 4.5 mm.

In special cases, the thickness might be 3.2 mm but then the gasket is composed only of tape and filler.

In a flange connection, the spiral wound gasket can be tightened to a final thickness near 3.2 mm, which means that the gasket is not reusable.

Example Use Cases

You can use spiral wound gaskets in many different applications. To give you a better idea, we’ve featured example use cases below from a power plant, a pulp factory, and an LNG vessel.

TT Gaskets - We supply gaskets for power plants

Power Plant

The requirements for sealing applications in the energy industry are very demanding and spiral wound gaskets excel especially when used in steam lines.

Pulp Factory

The handling processes in this industry typically require a lot of machine power and various types of automated lines.

With this much muscle power in use, you cannot afford your gaskets to let you down.

Spiral wound gaskets are a great choice to be used in batch cooking and in pipelines with high temperature and pressure.

Spiral wound gaskets are a great choice to be used in a pulp factory. Contact us.

The extreme pressure resistance make spiral wound gaskets a tremendously good choice in high pressure LNG lines.

LNG vessel

The extreme pressure resistance make spiral wound gaskets a tremendously good choice in high pressure LNG lines.