Corrugated Gaskets
Description:
Corrugated Metal Gaskets can be used in specialty flanges such as heat exchangers The corrugated metal core can be made with regular gasket materials such as carbon steel, 304 stainless steel, 316 stainless steel (if you need to go to higher temperatures), and other high-temperature materials.
The filler material typically has a have graphite facing. Other non-asbestos fillers can be adapted to this gasket, but in petrochemical applications, we only see the graphite facing. They’re a sheet of metal that’s manufacturers corrugate to make the corrugated metal core. The gasket should be used with a soft facing which essentially means flexible graphite (that’s what the gasket companies call it, we call it graphite), or another filler material like PTFE on each side.
The Corrugated gaskets consist of a stainless steel wave stainless steel plate with a graphite foil seal seat on both sides. The graphite layers and metallic core profile are adjusted in such a way that a wave crest overlap of 0.1 to 0.2 mm is guaranteed in the restraint condition. This achieves a very low diffusion cross-section. In addition, there is also a high density of the graphite in these areas.
Advantages
- Outstanding mechanical strength and thermal conductivity.
- Capable of withstanding high temperatures.
- There are almost no limitation regarding size
- Solid construction provides stability even for large diameters and ensures trouble-free handing and installation
Shape and construction
The metal gaskets are produced in several types to meet the most demanding applications, shapes round, oval, rectangular, etc.
Dimension for Corrugated Metal Gaskets to Suit ASME B16.5 Flanges
| CLASS | 150# | 300# | |
|---|---|---|---|
| NPS | ID | OD | OD |
| 1/2" | 0.84 | 1.88 | 2.12 |
| 3/4" | 1.06 | 2.25 | 2.62 |
| 1" | 1.31 | 2.62 | 2.88 |
| 1-1/4" | 1.66 | 3.00 | 3.25 |
| 1-1/2" | 1.91 | 3.38 | 3.75 |
| 2" | 2.38 | 4.12 | 4.38 |
| 2-1/2" | 2.88 | 4.88 | 5.12 |
| 3" | 3.5 | 5.38 | 5.88 |
| 3-1/2" | 4.00 | 6.38 | 6.50 |
| 4" | 4.50 | 6.88 | 7.12 |
| 5" | 5.56 | 7.75 | 8.50 |
| 6" | 6.62 | 8.75 | 9.88 |
| 8" | 8.62 | 11.00 | 12.12 |
| 10" | 10.75 | 13.38 | 14.25 |
| 12" | 12.75 | 16.13 | 16.62 |
| 14" | 14.00 | 17.75 | 19.12 |
| 16" | 16.00 | 20.25 | 21.25 |
| 18" | 18.00 | 21.62 | 23.50 |
| 20" | 20.00 | 23.88 | 25.75 |
| 24" | 24.00 | 28.25 | 30.50 |
