Durlon® Kammprofile gaskets are the preferred choice for applications requiring improved performance at low seating stresses. The serrated peaks provide reduced contact area and when combined with the soft conformable sealing layers, the Durlon® Kammprofile gasket provides a virtual metal-to-metal connection. They feature excellent resistance to blowout and provide superior stability for ease of handling and installation.
Durlon® Kammprofile gaskets have a solid metal core with concentrically serrated grooves machined into the top and bottom faces. The metal core is typically stainless steel but it can be supplied in various metallurgies as per the customer’s request. The serrated core is covered with soft sealing material and is dependent on the service conditions of the system. Flexible graphite and expanded PTFE sealing layers are most common, but other soft materials can be used as well. While providing the Durlon® Kammprofile gasket with excellent sealing properties, the soft sealing layers also fill in minor flange imperfections and protect the flange surfaces from damage.
Max (material dependent)
|Pressure, max, bar (psi)||414 (6,000)|
|pH range, room temp||0-14|
Durlon® Kammprofile gaskets are offered in 4 styles in each of the 2 core designs. Selection of the best configuration of your Durlon® Kammprofile gasket can be achieved by following this guide.
Parallel Root Core
Convex Root Core
|This core design is where the main sealing faces of the serrated metal core are parallel to each other. These are the standard design of Kammprofile gaskets.||This core design is where the main sealing faces of the serrated metal core are slightly convex in profile. The convex core helps compensate when flange rotation is experienced on bolt up of weaker flanges.|
|K40PEF & K40CEF
Extended Core Floating
|Similar to the floating centering ring, this style has an extended core whereby providing additional strength and stability to the overall floating design.|
|K40PF & K40CF
Floating Centering Ring
|A loose fitting centering ring is recommended on applications where thermal or pressure cycling can affect the integrity of the serrated metal core. It allows for expansion and contraction of the core through these cycling conditions.|
|K40P & K40C
No Centering Ring
|This basic configuration is most often used in tongue/groove and male/female flanges.|
|K40PI & K40CI
Integral Centering Ring
|The centering ring is used to position the gasket
between flat face and raised face type flanges.