Spiral wound seals are made of various sealing materials in various variants with or without metal auxiliary rings. The seal supplemented by these metal rings has the following advantages:
- High blow resistance ( up to 320 bar ).
- The inner ring protects the sealing material from overheating, dirt from the medium and also reduces the turbulence of the medium in the pipeline.
- The outer ring centers the seal in the flange and prevents it from being damaged during tightening.
Basic types according to DIN, BS, API and ANSI standards. An overview of the dimensions offered in the material sheet.
- POWERgasket SWG - seal without ring.
- POWERgasket SWG-IR - seal with inner ring.
- POWERgasket SWG-OR - seal with outer ring.
- POWERgasket SWG-IOR - seal with inner and outer ring.
Uses and benefits
These seals are particularly suitable for flange joints with fluctuating pressures and temperatures , and can withstand temperatures up to 1000 ° C depending on the material used.
- They can be used in a wide range of pressure and temperature.
- Easy installation due to its design.
- SWG-IOR eliminates installation errors.
- Easy to remove during disassembly thanks to the non-stick surface.
- They do not damage the flange surface.
We hold stocks of spiral wound seals type POWER gasket SWG-IOR for immediate dispatch of the following dimensions and materials.
- DIN: DN 15 - 400, PN 10 - 320.
- ASME B 16.20: 1/2 "- 16", 150 - 600 Lbs.
- Material: 316L / 316L + graphite / carbon steel.
Material Temperature range (°C) Max. operating pressure (MPa) Rings colour Graphite -200 to +650 20 grey PTFE -200 to +250 10 white Mica up to +1000 0,5-5 -
- The spiral part of the gasket is made by co-winding the steel strip and the sealing material. The sealing material is most often expanded graphite, PTFE, ceramics or mica.
- Ceramics or Mica are intended for extremely high temperatures and it is advisable to combine them with graphite to obtain better joint tightness.