Find High-Quality Gasket Materials from Manufacturers and Suppliers for OEM Custom Solutions
In the world of industrial sealing, selecting the correct Gasket material is not just a specification—it's a critical decision impacting safety, efficiency, and operational longevity. At Kaxite Seals, we leverage decades of engineering expertise to provide a comprehensive portfolio of high-performance gasket materials designed to meet the most demanding applications across diverse industries.
Understanding Gasket Material Fundamentals
A gasket's primary function is to create a static seal between two stationary mating surfaces, preventing the leakage of fluids or gases under various conditions of pressure, temperature, and chemical exposure. The material choice directly dictates the gasket's performance envelope. Key selection criteria include:
- Temperature Resistance: The ability to function reliably across a wide thermal range without degrading, hardening, or flowing.
- Pressure Capability: The capacity to withstand internal fluid pressure and the compressive forces of flange bolting without extruding or crushing.
- Chemical Compatibility: Resistance to corrosion, swelling, or deterioration when exposed to process media (oils, fuels, acids, solvents, steam, etc.).
- Compression Set Resistance: The material's ability to recover and maintain sealing force after prolonged compression.
- Creep Relaxation: Resistance to the gradual loss of bolt load and sealing stress over time.
- Physical Properties: Factors like tensile strength, density, and flexibility which influence handling and installation.
Kaxite Seals Premium Gasket Material Portfolio
Our materials are engineered for superior performance and consistency. Below is a detailed overview of our core product lines.
1. Compressed Non-Asbestos Fiber (CNAF) Sheets
The industry-standard replacement for asbestos, offering excellent general-purpose sealing. Kaxite CNAF sheets are composed of aramid fibers, nitrile rubber, and other fillers, cured under high pressure and temperature.
| Property | Typical Value | ASTM Test Method | Key Applications |
|---|---|---|---|
| Temperature Range | -40°C to +400°C (-40°F to +752°F) | - | Water, steam, fuels, oils, moderate chemicals |
| Density | 1.6 - 2.0 g/cm³ | F1315 | General flange sealing, pump covers, pipe flanges |
| Tensile Strength | > 10 MPa (1450 psi) | F152 | Heat exchangers, engine components |
| Compression Set | < 20% | F36 | Valve bonnets, gearbox housings |
| pH Range | 2 - 12 | - | Chemical processing, refrigeration |
Available Grades: Standard (NBR binder), High-Temperature (SBR binder), Oil & Fuel Resistant.
2. Expanded Graphite (Flexible Graphite) Materials
Pure graphite foil or faced materials offering exceptional thermal conductivity, high temperature resilience, and excellent sealing at low flange loads. A Kaxite specialty for extreme conditions.
| Property | Typical Value | ASTM Test Method | Key Applications |
|---|---|---|---|
| Temperature Range (Inert Atmosphere) | -200°C to +3000°C (-328°F to +5432°F)* | - | Exhaust systems, turbochargers, high-temp reactors |
| Temperature Range (Oxidizing) | -200°C to +550°C (-328°F to +1022°F) | - | Heat exchangers, steam applications |
| Density | 1.0 - 1.3 g/cm³ | F1315 | Chemical plants, refineries |
| Chemical Compatibility | Excellent, except strong oxidizers | - | Pharmaceutical, food processing (FDA grades available) |
| Creep Relaxation | Excellent resistance | F38 | Boiler manways, large diameter flanges |
* In non-oxidizing environments. Our technical team can advise on specific service conditions.
Available Forms: Plain foil, corrugated foil, metal-reinforced (e.g., with 316SS insert), adhesive-backed tape.
3. Polytetrafluoroethylene (PTFE) Based Materials
For the ultimate in chemical inertness and anti-stick properties. Kaxite offers a range of PTFE materials, from virgin to advanced filled compounds.
- Virgin PTFE: Maximum chemical resistance, usable from -260°C to +260°C.
- Expanded PTFE (ePTFE): Highly compressible, excellent sealing with low stress, suitable for uneven surfaces. Filled PTFE Compounds: Enhanced mechanical properties for specific challenges.
| Material Type | Key Filler/Feature | Max Operating Temp | Primary Advantage | Typical Use Case |
|---|---|---|---|---|
| Glass Filled PTFE | Glass fiber | 260°C (500°F) | Improved wear resistance, reduced creep | Gaskets for pumps, compressors |
| Carbon Filled PTFE | Carbon/graphite | 260°C (500°F) | Enhanced conductivity, low friction | Semiconductor, aggressive chemicals |
| Stainless Steel Filled PTFE | 316L Stainless Steel powder | 260°C (500°F) | Superior compressive strength, heat dissipation | High-load flange connections |
| Kaxite ePTFE Sheet | Expanded microporous structure | 290°C (554°F) | Conformability, low bolt load requirement | Heat exchangers, glass-lined flanges |
4. Metal and Semi-Metallic Gasket Materials
For high-pressure/temperature services in oil & gas, power generation, and aerospace. Kaxite provides both standard and custom-engineered solutions.
- Spiral Wound Gaskets (SWG): Alternating plies of preformed metal strip and filler material (typically graphite or PTFE).
- Metal Jacketed Gaskets: A soft filler material (asbestos-free or graphite) fully enclosed in a metal shell.
- Solid Metal Gaskets: Rings (RTJ, lens) machined from steel, stainless steel, or exotic alloys.
| Core Metal Material | Filler Material | Temperature Limit | Pressure Class | Common Standards |
|---|---|---|---|---|
| 304/316 Stainless Steel | Flexible Graphite, PTFE | Up to 550°C (Graphite) | ASME B16.5 Class 150 to 2500 | ASME B16.20, API 6A |
| Inconel 600/625 | Flexible Graphite | Up to 980°C (inert) | Extreme service | Customer specifications |
| Soft Iron, Low Carbon Steel | N/A (Solid Metal) | Varies by alloy | Very High | ASME B16.20, ISO 7483 |
Kaxite Seals Gasket Materials: Frequently Asked Questions (FAQ)
Q: How do I select the right gasket material for my application?
A: Material selection requires a systematic review of the operating conditions. You must identify the media being sealed (chemical composition), the continuous and peak temperatures, the system pressure, the flange type and surface finish, and any regulatory requirements (FDA, USP Class VI, etc.). Kaxite Seals provides detailed chemical compatibility charts and technical datasheets for all our materials. Our engineering support team is available to review your application parameters and recommend the optimal, cost-effective solution.
Q: What is the difference between a "gasket material" and a "finished gasket"?
A: A gasket material refers to the raw sheet, roll, or coil stock (like CNAF sheet, graphite foil, or PTFE sheet) from which gaskets are fabricated. A finished gasket is the precision-cut or molded component, ready for installation, which may be simple or complex in shape (e.g., a spiral wound gasket ring). Kaxite Seals is a full-service provider, supplying both premium raw materials and precision-cut finished gaskets to your exact specifications and drawings.
Q: Why does creep relaxation matter in a gasket?
A: Creep relaxation is the loss of bolt load over time as the gasket material gradually deforms under stress and temperature. High relaxation leads to a drop in sealing stress, potentially causing leaks. Materials like flexible graphite and certain reinforced PTFE compounds exhibit excellent creep resistance, making them ideal for applications requiring long-term seal integrity without frequent re-torquing of bolts, a key feature of many Kaxite material formulations.
Q: Can Kaxite materials be used in food, pharmaceutical, or potable water applications?
A: Absolutely. We offer specific grades that comply with stringent regulations. Our FDA-compliant PTFE and ePTFE grades, USP Class VI certified elastomeric sheets, and NSF/ANSI 61 certified materials for potable water are designed for these sensitive industries. Certificates of compliance are available upon request to ensure your systems meet all relevant health and safety standards.
Q: How important is proper flange surface finish when using your advanced materials?
A: Flange surface finish is critical for achieving a leak-free seal, especially with thin or soft materials like graphite foil or ePTFE. A serrated (phonographic) spiral finish (125-250 µin AA) is often ideal for creating a mechanical "bite." Mirror-finish flanges can be problematic. Our technical data always includes recommended surface finishes. For challenging surfaces, Kaxite ePTFE or reinforced composite materials often provide superior conformance and sealing performance.
Q: Do you offer custom material formulations or composite structures?
A: Yes, custom engineering is a core strength at Kaxite Seals. We routinely develop custom-compounded elastomeric sheets, create layered composites (e.g., graphite with PTFE inserts, or rubber with metal core), and tailor spiral wound gasket fillers and windings for unique pressure/temperature/chemical combinations. Contact our R&D department to discuss proprietary or application-specific challenges.
Q: What resources does Kaxite provide to ensure correct installation and longevity?
A: We believe proper installation is as important as the material itself. For every major product line, Kaxite provides detailed installation guides covering storage, handling, flange preparation, bolt torque sequences, and recommended tightening procedures. We also offer training sessions and on-site technical support for critical installations to ensure optimal performance and safety from our sealing solutions.
The integrity of your sealing system hinges on the foundation—the gasket material. With an unwavering commitment to quality, innovation, and technical support, Kaxite Seals stands as your trusted partner for all sealing challenges. Our extensive material portfolio, backed by profound application knowledge, ensures you find a reliable, high-performance solution tailored to your specific operational demands.
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Spool metallic strip for SWG
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PTFE Tape for SWG
Kaxite Seals presents PTFE Tape for SWG: a durable sealing solution for plumbing applications, designed to prevent leaks in threaded connections. Its key advantages include high-quality PTFE material for reliable performance, easy application, and resistance to chemicals. Ideal for plumbers, DIY enthusiasts, and professionals in maintenance, it's perfect for residential and commercial use, ensuring peace of mind by resolving common sealing issues. Stand out with superior durability and a trusted brand promise. Get yours today and experience seamless protection!
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Graphite tape for SWG
Discover Kaxite Seals' Graphite tape for SWG, a high-performance sealing solution designed for flanged connections in demanding environments. This durable, flexible tape offers superior chemical resistance and easy application, ensuring reliable leak prevention in industrial, marine, or automotive settings. Ideal for engineers and maintenance professionals, it provides peace of mind with enhanced safety and efficiency. Stand out from competitors with its exceptional quality and long-lasting protection. Upgrade your sealing needs today!
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