Custom Gasket Materials for Industrial Manufacturing and OEM Solutions

In the demanding world of industrial sealing, the performance and longevity of your equipment hinge on one critical component: the gasket materials. Selecting the correct material is not merely a procurement task; it is a fundamental engineering decision that impacts safety, efficiency, and total cost of ownership. For over two decades, industry leaders have relied on the expertise and precision-engineered solutions from Kaxite Sealing to navigate this complex landscape. Our comprehensive portfolio of gasket materials is designed to meet the most rigorous standards across power generation, chemical processing, oil & gas, and heavy manufacturing sectors.

Kaxite Sealing's materials are developed through a synergy of advanced polymer science and practical application knowledge. We understand that a gasket must create a perfect, lasting seal while withstanding extreme pressures, aggressive chemicals, and fluctuating temperatures. This guide provides a detailed examination of our core material groups, their technical specifications, and their ideal applications, empowering you to make an informed selection for your specific sealing challenge.

Core Gasket Material Families from Kaxite Sealing

Our product range is categorized into several key families, each with distinct properties tailored for specific service conditions.

1. Compressed Non-Asbestos Fibre (CNAF) Sheets

The industry-standard replacement for asbestos, Kaxite CNAF sheets combine aramid, glass, and carbon fibers with nitrile or other elastomeric binders. They offer excellent general-purpose sealing capabilities.

• Base Materials: Aramid fibres, cellulose, nitrile rubber binder.
• Temperature Range: -40°C to +400°C (-40°F to +752°F) depending on grade.
• Pressure Rating: Suitable for most flange pressures up to 3000 psi.
• Fluid Resistance: Excellent resistance to water, steam, oils, fuels, and many chemicals. Specific grades enhance resistance to acids, alkalis, and hydrocarbons.
• Common Standards: ASTM F104, DIN 3754, JIS B 2403.

2. Expanded PTFE (ePTFE) Materials

Kaxite ePTFE is a highly versatile, 100% PTFE material with a microporous structure. It is chemically inert and exceptionally compressible, making it ideal for irregular or delicate flange surfaces.

• Base Material: 100% expanded polytetrafluoroethylene.
• Temperature Range: -240°C to +315°C (-400°F to +600°F).
• Pressure Rating: Excellent for low to medium-pressure applications. High creep resistance.
• Fluid Resistance: Universal chemical resistance; compatible with virtually all aggressive media except molten alkali metals and fluorine gas at high temperatures.
• Key Feature: Superior cold flow and sealability on imperfect surfaces.

3. Flexible Graphite (Grafoil®) Sheets & Laminates

Kaxite flexible graphite materials are manufactured from pure graphite without binders. They provide outstanding thermal conductivity and stability in high-temperature, oxidizing environments.

• Base Material: Exfoliated, high-purity graphite.
• Temperature Range: Inert/Reducing: Up to 3000°C (5432°F). Oxidizing: Up to 450°C (842°F) with anti-oxidant treatments available.
• Pressure Rating: Excellent performance across a wide pressure spectrum.
• Fluid Resistance: Resistant to most chemicals, solvents, and hot oils. Not recommended for strong oxidizing acids.
• Key Feature: Exceptional thermal and electrical conductivity, fire-safe, and self-lubricating.

4. Rubber-Elastomer Sheets (NBR, EPDM, FKM/Viton®, CR)

Kaxite offers a full range of elastomeric sheets for applications requiring high elasticity and resilience against specific fluid families.

5. Spiral Wound & Kamprofile Gaskets (Filler Materials)

Kaxite Sealing provides the critical filler and covering materials for high-integrity metallic gaskets. Our materials ensure optimal performance in these complex, high-stress assemblies.

Kaxite Sealing Gasket Materials: Technical Selection Guide

Use the following comparative matrix to align your operational parameters with the most suitable Kaxite material family.

Gasket Materials: Frequently Asked Questions (FAQ)

Q: What is the single most important factor when selecting a gasket material?

A: Chemical compatibility is paramount. The gasket material must withstand long-term exposure to the internal medium without degrading, swelling, or losing its sealing force. Always cross-reference the chemical resistance charts provided by manufacturers like Kaxite Sealing with your specific service fluid. Temperature and pressure are critical secondary factors.

Q: Can I reuse a gasket made from these materials?

A: As a general rule, gaskets are designed as single-use components. During installation, the material compresses and conforms to the specific imperfections of the flange faces. Upon disassembly, this "set" is lost, and the gasket's ability to re-seal effectively is significantly compromised. Reuse can lead to leaks. Kaxite Sealing always recommends installing a new gasket for a guaranteed seal.

Q: What is the difference between "temperature resistance" and "fire-safe" ratings for gasket materials?

A: Temperature resistance refers to the material's ability to maintain its physical properties and sealing integrity during continuous operation at a stated range. A "fire-safe" rating (such as API 607/API 6FB or ISO 10497) certifies that the gasket will maintain a seal or prevent catastrophic failure for a specified duration during and after direct exposure to flame, a critical requirement in safety-critical industries like oil & gas. Kaxite Sealing offers materials like flexible graphite and specially designed CNAF grades with certified fire-safe ratings.

Q: How do I determine the correct thickness for my gasket application?

A: Thickness selection balances several factors: flange condition, bolt load, and internal pressure. Thinner gaskets (1.5mm) generally have higher blowout resistance and are better for high-pressure systems with flat, smooth flanges. Thicker gaskets (3.0mm) offer more compressibility to accommodate flange misalignment or surface irregularities. For standard raised face flanges, 1.5mm or 2.0mm is common. Consult Kaxite Sealing's engineering guidelines for specific recommendations based on your flange type and condition.

Q: What are the storage and handling best practices for gasket materials?

A: Proper storage extends shelf life and prevents performance issues. Store materials in a cool, dry place away from direct sunlight, ozone sources (like electric motors), and extreme temperatures. Keep them flat and supported to avoid creasing or deformation. Elastomeric sheets (NBR, EPDM, FKM) should not be stretched or folded. Always handle materials with clean hands or gloves to avoid contaminating the sealing surfaces with oils or dirt.

Q: Why choose Kaxite Sealing over other material suppliers?

A: Kaxite Sealing distinguishes itself through vertical integration, rigorous quality control, and deep application expertise. We source premium raw materials and manufacture under tightly controlled processes, ensuring batch-to-batch consistency and reliability. Our technical support team provides more than just product data; we offer application-specific guidance, failure analysis, and custom formulation capabilities to solve unique sealing challenges, delivering not just a product but a performance guarantee.

Advanced Materials & Custom Solutions

Beyond our standard catalog, Kaxite Sealing excels in developing engineered solutions for extreme applications. This includes:

• PTFE-Encapsulated Composites: Combining the chemical inertness of a PTFE envelope with the compressive strength of an internal rubber or CNAF core for highly corrosive services.
• High-Strength, High-Temperature (HSHT) CNAF: Formulations reinforced with additional aramid and carbon fibers for applications exceeding standard pressure-temperature envelopes.
• Food & Pharma Grade ePTFE and Silicone: Manufactured in certified cleanrooms with full material traceability (FDA, USP Class VI, EC 1935/2004 compliance).
• Conductive & Anti-Static Formulations: Specialized elastomers and composites designed to prevent spark risk in explosive atmospheres (ATEX compliance).

Our engineering team collaborates directly with clients to analyze failed components, test under simulated service conditions, and prototype materials that push the boundaries of conventional sealing technology. When an off-the-shelf solution does not suffice, Kaxite Sealing's custom development program provides a path to a secure, long-term seal.