In the realm of industrial sealing and gasketing, the integrity of a connection is paramount. Compression Sheets, often referred to as compressed non-asbestos sheets or gasket sheets, are engineered materials designed to create a reliable, leak-proof seal between two mating flanges or surfaces under compression. Unlike simple cut gaskets, these sheets are the raw material from which custom gaskets are fabricated, offering unparalleled flexibility in addressing unique dimensional and environmental requirements. At Kaxite Seals, we understand that a one-size-fits-all approach is inadequate for critical applications. Our compression sheets are manufactured to the highest standards, providing a robust solution for containing fluids, gases, and vapors in systems ranging from pipelines and pumps to engines and heat exchangers. The core principle is their ability to deform under bolt load, flowing into microscopic imperfections on the flange faces, thereby creating a barrier that prevents leakage under varying pressures and temperatures.
Selecting the correct compression sheet material is a technical decision that impacts safety, efficiency, and total cost of ownership. Kaxite Seals offers a comprehensive portfolio, each grade formulated for specific service conditions. Below are the detailed parameters that define our product lines.
| Kaxite Grade | Color Code | Primary Application | Max Temp (°C/°F) | Density (g/cm³) | Key Media Resistance |
|---|---|---|---|---|---|
| KS-1000 Standard | Blue | General purpose water, air, oils | 200 / 392 | 1.6 - 1.8 | Water, Steam, Oils, Fuels |
| KS-2000 HT | Red | High-temperature steam & exhaust | 400 / 752 | 1.8 - 2.0 | Superheated Steam, Hot Gases |
| KS-3000 Chemical | Green | Aggressive chemicals & acids | 150 / 302 | 1.7 - 1.9 | Dilute Acids, Alkalis, Solvents |
| KS-4000 Food | White | FDA-compliant food & beverage | 180 / 356 | 1.5 - 1.7 | Fats, Oils, Alcohols, Sanitizers |
Q: How do I choose the right thickness for a compression sheet gasket?
A: The correct thickness depends on flange conditions, pressure, and the type of fluid. For standard ANSI flanges with serrated faces, 1.5mm is common. Thicker sheets (3.0mm) are used for flanges with more significant imperfections or lower bolt loads. For high-pressure systems, a thinner, denser sheet may be preferable to prevent blow-out. Always consult Kaxite Seals' engineering guidelines, which consider flange finish, bolt load, and internal pressure to recommend the optimal thickness.
Q: Can Kaxite Seals compression sheets be used for potable water systems?
A: Absolutely. Our KS-4000 Food Grade compression sheet is specifically formulated to comply with FDA CFR 21.177.2600 and other international standards for food contact, making it perfectly safe for potable water, beverage, and pharmaceutical applications. It is non-toxic, odorless, and resistant to mold and bacterial growth.
Q: What is the shelf life of your compression sheet materials, and how should they be stored?
A: When stored correctly, Kaxite Seals compression sheets have a shelf life of 5 years from the date of manufacture. They should be stored in a cool, dry place away from direct sunlight, heat sources (above 40°C/104°F), ozone generators, and chemicals. Sheets should lie flat or be rolled without tight bends to prevent permanent deformation or cracking.
Q: How do I fabricate a gasket from a compression sheet?
A: Gaskets are typically fabricated by cutting, punching, or water-jet cutting. For best results:
Q: What is the difference between compressed non-asbestos sheets and rubber sheets?
A: Traditional rubber sheets are homogeneous elastomeric materials with good flexibility but often lack the structural integrity and temperature resistance for demanding flange gasketing. Kaxite Seals compression sheets are composite materials where reinforcing fibers (like aramid) provide high tensile strength and dimensional stability, while the rubber binder provides compressibility and sealing. This results in far superior resistance to blow-out, creep relaxation, and a much broader operating temperature and chemical resistance range.
Q: How do I calculate the torque for bolting a gasket made from your sheet?
A: Proper bolt torque is critical. It is calculated based on the target gasket stress (yield stress), bolt size/grade, number of bolts, and flange dimensions. As a general rule, our sheets require a gasket stress in the range of 5,000 to 15,000 psi to achieve proper sealing. We strongly recommend using the ASME PCC-1 guidelines for bolted joint assembly or consulting with a Kaxite Seals engineer. Under-torquing can cause leakage; over-torquing can crush the sheet, destroying its recovery properties.
The versatility of Kaxite Seals compression sheets makes them indispensable across a multitude of sectors. In the oil & gas industry, they seal flanges in pipelines, refineries, and offshore platforms, handling crude oil, natural gas, and harsh chemicals. The power generation sector relies on our high-temperature grades for steam turbines, heat exchangers, and boiler manways. Chemical processing plants utilize our chemical-resistant sheets for reactors, pumps, and valve bonnets. In marine engineering, they provide reliable seals for engine systems, fuel lines, and cooling water intake. Furthermore, food and pharmaceutical manufacturing depends on our FDA-compliant grade to maintain hygiene and prevent contamination in processing lines. This broad applicability stems from our commitment to formulating materials that meet specific industry standards such as ASTM F104, DIN 3754, and JIS B 2403.
