Kammprofile Gasket with Integral Outer Ring

Kammprofile Gasket with Integral Outer Ring

Core Features

  • Precision-Machined Grooved Core: Features a solid metallic core with concentric serrations (Kammprofile) that provide high-pressure “line-contact” sealing points across the flange face.
  • Integral Centering Ring: The metallic core and the outer locating ring are machined from a single piece of solid metal, ensuring absolute structural integrity and preventing ring detachment.
  • Ultra-Low Seating Stress: The serrated peaks concentrate the bolt load onto the soft sealing layers (Graphite or PTFE), allowing for a gas-tight seal at significantly lower torque than a standard spiral wound or jacketed gasket.
  • Anti-Blowout Security: The solid metal “backbone” prevents the soft sealing material from extruding or blowing out, even under extreme pressure surges and vacuum conditions.
  • Exceptional Thermal Recovery: The “spring-like” action of the serrated metal core allows the gasket to maintain a constant seal during rapid thermal expansion and contraction cycles.
  • Flange Protection: The soft facing layers (usually 0.5mm thick) fill flange imperfections and prevent the hard metallic serrations from “coining” or scratching the expensive flange faces.

At Kriloha Ltd., we understand that as industrial systems become more efficient, the demands on sealing technology become more extreme. For critical joints that experience high pressures and fluctuating temperatures, a standard gasket is often a weak point. The Kriloha Kammprofile Gasket with Integral Outer Ring is our most advanced solution for these “Bad Actor” flanges. As a premier global supplier of heavy-duty industrial seals, Kriloha Gaskets has engineered this product to combine the best properties of a solid metal gasket with the conformability of a soft seal.

The architecture of a Kammprofile gasket is a masterclass in localized stress management. We start with a solid metallic core—usually 316L Stainless Steel—and machine concentric V-shaped grooves into both faces. This core is then laminated with a soft facing material, most commonly high-purity flexible graphite. When the flange bolts are tightened, the peaks of the grooves “bite” into the graphite, forcing it into every microscopic pit and scratch on the flange face. This creates a series of high-density concentric rings that act as independent barriers against the process media.

The Integral Outer Ring is a key feature of this Kriloha design. Unlike “Loose Ring” versions where the centering ring is a separate piece of metal, the Integral design machines the sealing core and the outer ring from one solid plate. This ensures that the centering ring can never be accidentally detached during shipping or installation. It also provides a definitive “compression stop,” preventing over-tightening and protecting the serrated core from being crushed. Whether you are managing a massive refinery turnaround or a critical high-pressure steam valve, Kriloha Kammprofile Gaskets provide the mechanical stamina and metallurgical integrity required for undisputed safety.

Primary Use Cases

  • Heat Exchanger Manways: The “Gold Standard” for large-diameter heat exchanger flanges where bolt load is limited and thermal cycling is frequent.
  • High-Pressure Steam Systems: Reliable sealing for superheated steam lines in power generation and industrial processing.
  • Petrochemical Reactors: Ideal for high-pressure, high-temperature chemical synthesis where zero-leakage is a safety mandate.
  • Legacy or Pitted Flanges: Providing a robust seal on older equipment where standard gaskets struggle to conform to surface irregularities.
  • Volatile Organic Compounds (VOC) Service: Meeting the strictest “Low Emission” standards by providing a dense, gas-tight barrier.

FAQs

Why use a Kammprofile instead of a Spiral Wound Gasket?

Kammprofiles are much easier to handle (they won’t “unspool”) and require significantly lower bolt loads to achieve a seal. They also provide better recovery during thermal cycles and are generally preferred for large-diameter heat exchangers.

Does the integral ring provide a compression stop?

Yes. The outer ring is machined to a specific thickness that prevents the internal serrated core from being over-compressed, ensuring the “spring-back” recovery of the gasket remains intact.

What facing materials does Kriloha offer?

Our standard is high-purity flexible graphite for temperatures up to 450°C. For aggressive chemical service, we offer ePTFE, and for extreme heat (up to 1000°C), we utilize mica or ceramic-based facings.

Can these gaskets be refurbished?

In many cases, yes. If the metallic core is undamaged after a service cycle, the old graphite can be cleaned off and the core can be re-faced with new material, making it a cost-effective choice for large-diameter equipment.

Are these gaskets fire-safe?

Absolutely. Because they are constructed with a solid metal core and non-combustible mineral facings, they are inherently fire-safe and meet the industry’s most rigorous safety standards.

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