Basalt Fiber (also widely searched as Basalt Fibre, Continuous Basalt Fiber, Volcanic Rock Fiber, or Basalt Mineral Fiber) is a high-performance inorganic fiber produced directly from molten basalt rock — a naturally occurring volcanic rock. At Kaxite Seals, a leading basalt fiber manufacturer and supplier in China, we engineer advanced basalt fiber solutions designed to meet the most demanding industrial applications, from high-temperature sealing to composite reinforcement. Unlike glass or carbon fibers, which require the addition of multiple raw materials, basalt fiber is a single-component material, making its production simpler and more environmentally friendly. Whether you're operating in aerospace, automotive, construction, chemical processing, or marine industries, Kaxite Seals provides the reliable basalt fiber products you need — backed by ISO 9001 certification and custom OEM/ODM capabilities.
The core advantage of basalt fiber lies in its unique combination of mechanical performance, chemical resistance, and thermal resilience — a combination difficult to match with other composites. As industries worldwide push for materials that offer greater longevity, reduced maintenance, and higher temperature tolerance, basalt fiber composites have emerged as a superior alternative to traditional fiberglass and aramid materials. Kaxite Seals utilizes premium continuous basalt fiber to manufacture basalt fiber rope, basalt fiber tape, basalt fiber cloth, basalt fiber sleeving, basalt fiber yarn, and custom-engineered components.
Kaxite Seals utilizes premium continuous basalt fiber to manufacture seals, gaskets, and custom components. Our proprietary treatment and weaving techniques ensure optimal performance. Below are the detailed technical parameters that define our product line.
| Property | Value | Test Method |
|---|---|---|
| Tensile Strength | 3,000 - 4,840 MPa | ASTM D638 |
| Elastic Modulus | 85 - 110 GPa | ASTM D638 |
| Elongation at Break | 2.5% - 3.2% | ASTM D638 |
| Density | 2.65 - 2.90 g/cm³ | ASTM D792 |
| Filament Diameter | 9 - 24 μm | — |
| Melting Point | 1,400°C | — |
| Thermal Conductivity | 0.031 - 0.040 W/(m·K) | ASTM C177 |
| Coefficient of Thermal Expansion | 6.0 × 10⁻⁶ /K | ASTM D696 |
| Water Absorption | < 0.5% | ASTM D570 |
| Dielectric Constant | 2.2 - 2.5 @ 1 MHz | ASTM D150 |
| Fire Resistance | Non-combustible (ASTM E136) | ASTM E136 |
| Condition | Temperature Range | Application |
|---|---|---|
| Continuous Operating | -260°C to +850°C | Industrial furnaces, exhaust systems |
| Short-Term Maximum | Up to 1,000°C | Peak temperature events |
| Cryogenic | Down to -260°C | Liquid nitrogen, cryogenic piping |
| Chemical Environment | Concentration | Strength Retention |
|---|---|---|
| Alkaline (NaOH) | 10% @ 80°C / 24h | >95% |
| Acidic (HCl) | 5% @ 60°C / 24h | >85% |
| Salt Spray / Seawater | ASTM B117 / 1000+ h | >98% |
| Hydrocarbons & Oils | Extended exposure | >99% |
| UV Radiation & Weathering | Years of outdoor exposure | >98% |
Kaxite Seals offers a diverse portfolio of basalt fiber products to suit various industrial applications:
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Basalt fiber (also known as volcanic rock fiber or continuous basalt fiber) is a continuous filament drawn from molten basalt rock — a naturally occurring volcanic rock. Unlike fiberglass (E-glass), which requires the addition of multiple raw materials, basalt fiber is a single-component material, making its production simpler and more environmentally friendly.
Basalt fiber maintains structural integrity from -260°C to +850°C without significant degradation. It can withstand short-term exposure up to 1,000°C. This makes it ideal for high-temperature applications such as industrial furnaces, exhaust systems, boilers, and chemical reactors.
Yes. Basalt fiber is 100% recyclable, non-toxic, inert, and noncombustible. It is derived from naturally occurring volcanic rock, and unlike glass or carbon fibers, it is a single-component material, making its production simpler and more environmentally friendly.
Absolutely. Kaxite Seals manufactures basalt fiber rope, basalt fiber tape, basalt fiber cloth, and sheet gasket materials using basalt fiber as the reinforcing component. These products reliably seal flanges and joints in exhaust systems and chemical reactors operating continuously at temperatures up to 750°C. Basalt fiber gaskets provide zero burnout and maintain seal integrity under thermal cycling.
Yes. Basalt fiber exhibits remarkable inertness and is more resistant to chemical attack in alkaline, acidic, and salty environments than glass fibers. It maintains >95% strength retention in 10% NaOH solution at 80°C, >85% in 5% HCl solution at 60°C, and >98% in salt spray and seawater environments.
Yes. Basalt fiber functions effectively in very low temperatures down to -260°C, making it ideal for insulating liquid nitrogen tanks and pipes in cryogenic applications.
Kaxite Seals manufactures basalt fiber rope, basalt fiber tape, basalt fiber cloth, basalt fiber sleeving, basalt fiber yarn, and custom-engineered basalt fiber solutions. We also produce tadpole seals, braided packing, and specialty gaskets using basalt fiber reinforcement.
Absolutely. Kaxite Seals' engineering team can design and manufacture custom basalt fiber products in various shapes, sizes, and configurations to address unique application challenges. We offer OEM/ODM customization for all basalt fiber products.
Basalt fiber products should be stored in a dry, ventilated area away from moisture, chemicals, and direct sunlight. It is recommended to keep them in their original packaging until use, positioned off the ground on pallets to avoid contamination. Under proper storage conditions, basalt fiber has an indefinite shelf life.
To request a basalt fiber quote, simply contact our sales team via the Get a Quote button above. Please provide your product requirements, quantity, and any specific specifications. We typically respond within 24 hours with basalt fiber pricing and availability.
Related Solutions: Basalt Fiber Rope | Basalt Fiber Tape | Basalt Fiber Cloth | Basalt Fiber Sleeving | Basalt Fiber Yarn
