ecatalog Kammprofile Standard Flange Gaskets
Flexpro Gaskets (formerly known as the Kammprofile) gasket offers a safe, effective seal under the most severe operating conditions on both standard pipe work and special applications. The Flexpro gasket offers excellent flexibility and recovery characteristics, allowing seal integrity under pressure and temperature fluctuations, temperature differential across the flange face, flange rotation, bolt stress relaxation and creep.
The Flexpro is a two part assembly, consisting of a precision serrated metallic core with the addition of soft gasket sealing materials bonded to either face (usually graphite). Although the soft gasket sealing material provides initial low stress gasket seating, the serrated geometry of the metallic core enhances sealing performance by means of inducing stress concentration on the sealing layers while containing these sealing faces within the radial grooves. This minimizes lateral flow and ensures the applied load is confined upon the gasket sealing faces. A further function of the metallic core is to provide exceptional gasket rigidity and blow out resistance, as well as offering an integral compression stop.
Style PN
Normally used in male/female, tongue groove, and other flange configurations
Style ZG
Provided with an integral outer locating ring for proper gasket positioning within the flange bolt circle or in a recess.
Style ZA Similar to the ZG except with a loose fitting independent locating ring. The loose fitting ring allows for expansion and contraction without excessive stress being induced in the solid metal core. Depending on centering ring material and thickness, may be economical than Style ZG.
Flexpro gaskets are suitable for Class 150 to 2500 service. The temperature limitation is dictated by the combination of metallic and non-metallic materials used in its construction. These gaskets are available in standard pipe flange sizes and can be manufactured in a variety of thicknesses, shapes and sizes.
Ideal For Heat Exchanger Flanges
The Flexitallic Flexpro gasket is proving to be especially suitable as a reliable, cost effective alternative to jacketed gaskets that are commonly used in heat exchanger applications. Use of the Flexitallic Flexpro gasket will ensure a reliable seal, from initial hydrostat through difficult operating conditions. Flexpro gaskets are suitable for use on TEMA flanges, and when required, pass partition ribs can be supplied in any configuration. The Flexpro gasket provides a high integrity, low seating stress seal, and is ideal for heat exchanger applications with limited bolt load or lighter weight flanges.
Standard Core Materials (Core Thickness is .125" (nominal); other thicknesses are readily available to suit specific needs).
| Maximum Temperature | |||||||
| 1000-1600 F | (535 -870º C) | ||||||
| 800 F | 425 C | ||||||
| 500 F | 260 C | ||||||
| 600 F | 315 C | ||||||
| 800 F | 425 C | ||||||
| 1500 F | 815 C | ||||||
| 1400 F | 760 C | ||||||
| 2000 F | 1100 C | ||||||
| Standard Facing Materials | |||||||
| Maximum Temperature | Seating Stress at Room Temperature | ||||||
| Min | Max | ||||||
| Flexible Graphite* | 850 F | 450º C | 2500 | 72500 psi | (17-500 Mpa) | ||
| Non-asbestos Sheet | 350 - 750 F | (175 - 400º C | 3300 | 72500 psi | 23-500 Mpa) | ||
| PTFE | 500 F | 260 C | 2500 | 72500 psi | (17 -500 Mpa) | ||
| Soft Metalsl | Per Material | Per Material | Per Material | Per Material | Per Material |
*Flexible graphite can be used at temperatures from cryogenics to 850 F (450 C) in an oxidizing atmospere; and up to 6000 F (3300 C) in a reducing or neutral atmosphere.
Standard facing thickness is .020"; other thicknesses and materials are readily available to suit specific applications.
The ideal flange surface finish for the Flexitallic Flexpro is 125- 250 RMS.
Manufactured to proposed ASME B16.20
