Kammprofile Header Plug Gasket

Kammprofile Header Plug Gasket

Category: Gaskets | Sub-Category: Kammprofile Gaskets

Core Features

  • Serrated Sealing Technology: Features a solid metallic core with concentric V-shaped grooves (Kammprofile) machined into the sealing faces to provide high-pressure “line-contact” points.
  • Hybrid Construction: The serrated metal core is laminated with a soft 0.5mm layer of High-Purity Flexible Graphite or PTFE, combining the structural strength of a metal gasket with the conformability of a soft seal.
  • Low Torque Sealing: The serrated “peaks” concentrate the plug’s torque onto the soft facing material, allowing for a gas-tight seal at significantly lower bolt loads than solid metal or jacketed plug gaskets.
  • Anti-Extrusion Design: The solid metal “backbone” prevents the soft sealing layers from being squeezed out or “cold-flowing” under the extreme compressive forces of high-pressure header plugs.
  • Superior Recovery: The “spring-like” geometry of the Kammprofile core maintains a constant seal during thermal expansion and contraction cycles, which are common in air-cooled heat exchangers.
  • Flange & Plug Protection: The soft facing material flows into microscopic imperfections, preventing the hard metallic core from “coining” or scratching the expensive header box seats or plug shoulders.

At Kriloha Ltd., we recognize that as refineries and chemical plants push for higher efficiencies, the pressures in heat exchanger headers are climbing. A standard solid metal gasket requires massive torque to seal, often risking damage to the header box threads. The Kriloha Kammprofile Header Plug Gasket is our high-performance alternative. As a premier global supplier of industrial seals, Kriloha Gaskets has adapted the legendary Kammprofile technology specifically for the small-diameter, high-stress environment of header plugs.

The architecture of this gasket is a masterclass in localized stress management. Instead of a flat piece of metal, we machine concentric serrations into a solid 316L Stainless Steel or Soft Iron core. We then bond flexible graphite to both faces. When the header plug is torqued, the serrations act like a series of high-pressure “teeth,” biting into the graphite and forcing it into the flange face and the plug shoulder. This creates multiple redundant sealing rings. Even if the internal-most ring is bypassed, the subsequent serrated rings act as independent barriers, ensuring absolute containment.

Manufacturing these gaskets at Kriloha involves precision CNC machining to ensure the serration pitch and depth are optimized for the small surface area of a header plug. We ensure the hardness of the core is strictly controlled to ensure the gasket remains the sacrificial element in the joint. By choosing Kriloha Ltd., you are investing in a “High-Integrity” seal that reduces the mechanical stress on your header box while providing a significantly more reliable barrier than traditional metallic washers.

Primary Use Cases

  • High-Pressure Fin-Fan Heat Exchangers: An upgraded sealing solution for header boxes where traditional solid metal gaskets have failed to maintain a seal.
  • Severe Thermal Cycling Services: Ideal for cooling loops that undergo rapid temperature fluctuations, causing standard gaskets to loosen.
  • Hydrogen & Volatile Gas Service: Providing a high-density, gas-tight barrier for hazardous media that requires the strictest leakage controls.
  • Worn or Pitted Header Seats: The Kammprofile’s ability to force soft filler into surface irregularities makes it the best choice for older equipment.
  • Vibration-Intense Environments: Providing a stable, high-friction seal that resists the loosening effects of heavy-duty cooling fans.
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FAQs

Why use a Kammprofile instead of a solid metal header plug gasket?

Kammprofiles seal at much lower torque levels. This protects the threads of your header box from over-stressing and makes it much easier to achieve a “Zero-Leak” status on older or slightly damaged seats.

Can these handle high-pressure hydrogen?

Yes. The combination of a solid metal core and high-density graphite makes this one of the most effective gaskets for small-molecule gas containment at high pressures.

What is the maximum temperature for these gaskets?

When used with a Stainless Steel core and Graphite facing, these gaskets are rated for temperatures up to 450°C in oxidizing atmospheres and higher in non-oxidizing environments.

Are they reusable?

Generally, no. While the metal core might remain intact, the graphite facing is crushed and deformed during the first installation to create the seal. For critical high-pressure service, Kriloha always recommends a new gasket.

What sizes are available for header plugs?

Kriloha manufactures these in all standard plug sizes (e.g., 1″, 1-1/8″, 1-1/4″, 1-3/8″) and can produce custom dimensions for specialized high-pressure vessel access ports.

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