Kammprofile gaskets consist of a metal core (generally Stainless Steel) with concentric grooves on either side with sealing materials. The sealing layers (depending on the service duty) can be Graphite, PTFE (Teflon), CAF or Metal (e.g Aluminium or Silver). Kammprofile's can be used without sealing layers to provide an excellent seal but there is a risk of flange surface damage.
The very wide seating stress range (minimum to maximum stress) of the Kammprofile gasket makes it
The recommended flange surface finish for Kammprofiles with sealing layers is from 125-250 RMS.
Thermal-shock conditions may damage Kammprofiles with integral centring rings (thermal tension may cause cracks in the core).
The following table gives information regarding different types of materials offered as sealing layer materials by IGP. Also given is recommended seating stress range for reliable and effective performance:
| Material | Temp (Deg.C) | Max.Operating Pressure(Bar) | Gas Tightness | Application | Seating Stress | |||
|---|---|---|---|---|---|---|---|---|
| Min | Max | Min (N/mm2) | Optimum (N/mm2) | Max (N/mm2) | ||||
| Graphite | -200 | 550 | 250 | Good | Aggressive Media | 20 | 90 | 400 |
| PTFE | 200 | 250 | 100 | Good | Aggressive Media | 20 | 90 | 400 |
| CAF | -150 | 450 | 100 | Moderate | Liquids | 65 | 161 | 400 |
| Silver | -200 | 750 | 250 | Good | Aggressive Media | 125 | 240 | 450 |
When a Kammprofile is replacing an existing gasket (eg. spiral wound gasket); IGP recommends a 4mm thick core to prevent unnecessary stresses on existing pipe lines. For new system, we recommend 5 mm thick cores. The value should be taken into account at the design stage.
| Pipe system | Core thicknes | Seated Thickness (Core + 2 sealing layers) |
|---|---|---|
| Existing | 4mm | 5.0mm to 5.2mm |
| New | -5mm | 6.0mm to 6.2mm |
Spiral wound gaskets, Ring Gaskets, Solid metal gaskets, Non metallic gaskets, Insultation kit gaskets, Heat Exchanger gaskets, Kammprofile Gaskets, monolitihic insulation joints, Valve Components clamp.
IGP ENGINEERS PVT LTD
IGP Engineers is the flagship company of the IGP group. A pioneer in sealing technology, IGP is a leading manufacturer and exporter of all types of industrial gaskets including Spiral Wounds, Ring Joints, Kammprofiles, Insulation gasket kits and Monolithic Insulation Joints.
