For industries demanding uncompromising performance in high-temperature and high-pressure environments, Mineral Fiber Packing stands as a cornerstone of reliability. At Kaxite Sealing, with our decades of expertise in advanced sealing solutions, we have engineered a premium line of mineral fiber packings designed to excel where others fail. These packings are not merely components; they are critical safeguards for equipment longevity and operational safety. Our formulations leverage select mineral fibers, often enhanced with lubricants and corrosion inhibitors, to create a braided packing material that maintains exceptional sealing integrity under extreme thermal and mechanical stress. Whether it's for valves, pumps, or flanges in demanding sectors like power generation, chemical processing, or metallurgy, Kaxite Sealing's Mineral Fiber Packing provides a robust, durable, and cost-effective sealing barrier against leakages.
Kaxite Sealing's Mineral Fiber Packing is distinguished by a set of superior characteristics engineered for peak performance:
Selecting the correct packing requires precise technical data. Below are the detailed specifications for Kaxite Sealing's standard Mineral Fiber Packing series. For custom formulations, please contact our engineering team.
| Parameter | Specification / Value | Test Standard |
|---|---|---|
| Continuous Operating Temperature | Up to 1200°F (650°C) | ASTM D-2596 |
| Maximum Pressure (with reinforcement) | Up to 2500 psi (172 bar) | API 622 / FSA |
| pH Range (Chemical Resistance) | 1 - 12 | Laboratory Immersion Test |
| Density (Approx.) | 85 - 110 lbs/ft³ (1.36 - 1.76 g/cm³) | ASTM D-3800 |
| Thermal Conductivity | 0.05 - 0.07 W/m·K @ 400°C | ASTM C-177 |
| Tensile Strength | ≥ 3000 psi (20.7 MPa) | ASTM D-2256 |
| Compression Recovery | > 85% | FSA PS-100 |
| Cross-Section (Square) | Standard Spool Length | Recommended Gland Fit-up |
|---|---|---|
| 1/8 inch (3 mm) | 50 ft (15.2 m) or 100 ft (30.5 m) | Small valves, instrumentation |
| 1/4 inch (6 mm) | 50 ft (15.2 m) or 100 ft (30.5 m) | General service pumps, valves |
| 3/8 inch (10 mm) | 50 ft (15.2 m) | Large valves, agitators |
| 1/2 inch (13 mm) | 50 ft (15.2 m) | Large pumps, heavy-duty equipment |
| 5/8 inch (16 mm) | 50 ft (15.2 m) or custom | Specialty industrial applications |
| 3/4 inch (19 mm) and above | Custom lengths available | Custom engineered solutions |
Kaxite Sealing Mineral Fiber Packing is the preferred choice across numerous high-temperature industries:
Proper installation is critical to achieving the full performance potential of Kaxite Sealing Mineral Fiber Packing. Follow these key steps:
What exactly is mineral fiber packing?
Mineral fiber packing is a type of high-temperature sealing material manufactured from inorganic fibers derived from minerals like silica, alumina, or rock wool. These fibers are typically braided, often with metallic or other inorganic reinforcements, and impregnated with lubricants to create a flexible, durable seal used in pumps, valves, and flanges operating under extreme heat and pressure.
How does Kaxite Sealing's mineral fiber packing differ from generic brands?
Kaxite Sealing's packing is distinguished by our proprietary fiber blending and treatment processes. We use higher purity raw materials, advanced braiding techniques for consistent density, and specialized high-temperature lubricant impregnation. This results in superior thermal stability, longer service life, and more reliable leak control, backed by our technical support and application expertise.
Is your mineral fiber packing safe and asbestos-free?
Absolutely. All Kaxite Sealing mineral fiber packing products are 100% non-asbestos. We use modern, safe mineral fibers such as ceramic and silica-based materials that comply with all international health, safety, and environmental regulations, including REACH and RoHS directives.
What is the maximum temperature your packing can handle?
Our standard grades are rated for continuous service up to 1200°F (650°C). For specific short-term peak exposures or applications involving different media, please consult our technical datasheets or contact our engineers, as we offer specialized grades with even higher temperature capabilities.
Can it be used with aggressive chemicals?
Yes, mineral fiber packing is generally highly chemically inert. Kaxite Sealing's packing is resistant to most acids, alkalis, solvents, and hydrocarbons within a pH range of 1 to 12. However, for specific, highly concentrated acids or molten metals, we recommend consulting our technical service to select or customize the most resistant formulation.
How do I choose the right size and style?
The correct size is determined by the stuffing box depth and the clearance between the shaft/stem and the box bore (the cross-section). Our standard sizes range from 1/8" to 1" and beyond. The style (square braid, lattice braid) depends on the equipment speed, pressure, and media. Our sales engineers can assist you in selecting the optimal product based on your specific operating conditions.
How many rings of packing should I install in the stuffing box?
A general rule is to install a number of rings equal to the shaft diameter (in inches) divided by 1/8. For example, a 2-inch shaft would typically require about 2 / (1/8) = 16 rings. However, the exact number can vary based on box depth and application. The final ring should leave enough space for proper gland follower adjustment. Refer to our installation guide or contact us for precise recommendations.
Why is some initial leakage acceptable or even recommended after installation?
A minimal, controlled leakage (a few drops per minute) is often recommended during the initial run-in period. This leakage serves to lubricate and cool the packing/shaft interface, preventing excessive friction, heat buildup, and premature wear. Once the packing has seated properly, this leakage typically decreases or stops. Overtightening to stop all leakage immediately can cause overheating and rapid failure.
How long does mineral fiber packing typically last?
Service life varies significantly based on operating conditions—temperature, pressure, media, shaft speed, surface finish, and installation quality. Under optimal conditions with proper maintenance, Kaxite Sealing packing can last for several months to years in continuous service. Regular monitoring and proper gland adjustment are key to maximizing lifespan.
What are the signs that my mineral fiber packing needs replacement?
Key indicators include: a persistent and uncontrollable increase in leakage even after gland adjustment, excessive heat generation at the gland area, visible degradation or powdering of the packing material, and a significant increase in power consumption or shaft drag. Periodic inspection during planned maintenance shutdowns is the best practice.
Selecting Kaxite Sealing means partnering with a leader in high-performance sealing technology. Our commitment extends beyond manufacturing:
