(FAQs)
Why is the V-shape in the metal winding so important?
The V-profile acts as a mechanical spring. It allows the gasket to expand and contract with the flange during thermal cycles, maintaining a constant seal pressure even when the hardware moves.
Can I reuse a Kriloha Standard Spiral Wound Gasket?
No. Upon installation, the metallic windings undergo permanent deformation to create a seat. Reusing a gasket significantly increases the risk of failure and leakage.
Which filler material should I choose—Graphite or PTFE?
Flexible Graphite is the industry standard for high-heat and steam applications (up to 450°C). PTFE is preferred for aggressive chemical services where extreme chemical inertness is required, though it is limited to lower temperatures (up to 260°C).
What is the purpose of the outer centering ring?
The outer ring serves two roles: it centers the gasket accurately within the bolt circle and acts as a compression limiter (stop) to prevent the installer from over-tightening and crushing the sealing element.
Does Kriloha provide custom sizes for non-standard flanges?
Absolutely. While we manufacture to ASME and EN standards, Kriloha Ltd. specializes in custom diameters and thicknesses tailored to unique equipment requirements and specialized pressure vessels.
At Kriloha Ltd., we have perfected the engineering of the Standard Spiral Wound Gasket (SWG) to meet the rigorous demands of modern industrial sealing. As a top-tier supplier of rubber seals and gaskets, our Kriloha Gaskets brand represents the gold standard in semi-metallic technology. The architecture of a spiral wound gasket is unique; it consists of a pre-formed V-shaped metallic strip—precision-wound with layers of soft, non-metallic filler.
This “V” profile is the heart of the gasket’s performance, acting as a mechanical spring that provides exceptional recovery under fluctuating temperatures and pressures. This resilience is critical in systems where thermal cycling or pressure surges can cause standard flat gaskets to fail. If a flange expands slightly due to heat, the Kriloha winding expands with it, maintaining a constant seal.
Our manufacturing process prioritizes Winding Density Control (WDC). By utilizing automated tensioning systems, Kriloha ensures that the sealing element is neither too soft (which leads to leakage) nor too dense (which prevents proper seating). For most industrial applications, we utilize high-purity flexible graphite as the filler material, offering excellent chemical resistance and thermal stability. In highly corrosive environments, virgin PTFE is employed.
To ensure structural integrity, our standard configuration includes a solid carbon steel or stainless steel outer ring. This ring serves two vital functions: it centers the gasket perfectly within the bolt circle and acts as a compression stop, protecting the sealing element from being over-crushed during installation. We also offer inner rings, which are essential for high-pressure classes (Class 900 and above) to prevent the winding from buckling inward.
As the leading provider of sealing solutions, Kriloha Gaskets focuses on reducing your facility’s Fugitive Emissions. Our gaskets are designed to create a gas-tight seal even on slightly imperfect flange faces, significantly lowering the risk of environmental non-compliance and hazardous leaks. Every Kriloha SWG is color-coded for instant on-site identification, reducing human error during maintenance turnarounds. When you choose Kriloha, you aren’t just buying a component; you are investing in decades of metallurgical expertise and a commitment to zero-leakage performance.
