Kaxite is a professional Gasket and Packing Materials supplier and manufacturer based in Ningbo, China. We produce high-performance gaskets, braided packing, compression sheets, PTFE & PEEK products, sealing machines, and sealing tools for oil & gas, chemical processing, power generation, food & pharmaceutical, marine, and water treatment industries. With factory-direct pricing, OEM support, custom formulation, and fast global delivery, Kaxite helps buyers source reliable industrial sealing solutions with confidence.
Competitive pricing without sacrificing material quality, backed by decades of sealing expertise.
Custom sizes, materials, hardness, and private-label packaging tailored to your specifications.
In-house testing for compression, recovery, creep relaxation, and air tightness on every batch.
Stable production capacity and export experience for bulk orders with reliable lead times.
Sealing materials may be small components, but they directly affect operational safety, energy efficiency, maintenance cost, and system reliability. A correct seal prevents leaks, contains pressure, excludes contamination, reduces vibration, and protects equipment from extreme temperatures and corrosive media. Kaxite combines advanced material science, strict quality control, and decades of sealing experience to deliver stable performance in demanding applications.
Spiral wound gaskets, ring joint gaskets, graphite gaskets, PTFE gaskets, rubber gaskets, copper gaskets, and flange insulation gasket kits.
PTFE packing, graphite packing, aramid fiber packing, carbon fiber packing, and synthetic fiber packing.
Graphite sheet, PTFE sheet, rubber sheet, cork sheet, mica sheet, non-asbestos sheet, and asbestos sheet.
Gasket materials and packing materials for production and maintenance.
Glass fiber, ceramic fiber, basalt fiber, graphite products, and anti-corrosion products.
Machines for spiral wound gaskets, cut gaskets, Kammprofile gaskets, double jacketed gaskets, and braiding packing.
Gasket tools, packing tools, and injectable sealant tools.
PTFE rod, tube, ball, hose, fiber, film, and machined PTFE parts.
Contains liquids and gases within the system and prevents external substances from entering.
Maintains system pressure integrity for safe and efficient operation.
Keeps dust, moisture, and particles away from sensitive components.
Absorbs shock and reduces operational noise for smoother performance.
Provides barriers against heat transfer or electrical current in specific applications.
| Industry | Typical Applications | Key Challenges |
|---|---|---|
| Oil & Gas | Flange gaskets, valve seals, pump seals, pipeline connections | High pressure, extreme temperatures, corrosive chemicals such as H2S and CO2 |
| Chemical Processing | Reactor lids, agitator shafts, pipe flanges, tank manways | Aggressive chemical attack, thermal cycling, regulatory compliance |
| Power Generation | Turbine casing, steam system valves, heat exchanger gaskets | High-temperature steam, pressure cycling, long-term stability |
| Food & Pharmaceutical | Processing vessel seals, pump seals, sanitary fittings | FDA and EC compliance, non-toxicity, cleanability, sterilization resistance |
| Automotive & Aerospace | Engine gaskets, fuel system seals, hydraulic fittings, avionics | Weight reduction, fuel and oil resistance, wide temperature ranges, vibration |
| Water Treatment | Pump housings, pipe joints, filter press plates, valve stems | Exposure to water, ozone, chlorine, and varying pH levels |
Sealing material selection should be based on the complete operating envelope, not only on temperature or price. Kaxite technical support can help you evaluate the following factors:
| Grade | Base Polymer | Temperature Range | Key Resistances | Typical Hardness (Shore A) | Primary Applications |
|---|---|---|---|---|---|
| KX-750 NBR | Nitrile Butadiene Rubber | -30°C to +110°C | Excellent resistance to oils, fuels, and hydrocarbons | 50 - 90 | Hydraulic systems, fuel handling, automotive oil seals |
| KX-950 FKM | Fluoroelastomer (Viton equivalent) | -20°C to +230°C | Outstanding resistance to heat, oils, fuels, acids, and chemicals | 65 - 90 | Chemical process seals, aerospace fuel systems, high-temperature engine components |
| KX-550 EPDM | Ethylene Propylene Diene Monomer | -50°C to +150°C | Superior resistance to hot water, steam, ozone, and weathering | 40 - 90 | Heating and cooling systems, water treatment seals, outdoor electrical enclosures |
| KX-350 SI | Silicone Rubber | -60°C to +230°C | Extreme temperature flexibility, good electrical insulation, FDA grades available | 20 - 80 | Food and pharmaceutical seals, lighting gaskets, high and low temperature static seals |
| Grade | Core Composition | Density (g/cm³) | Pressure Rating | Temperature Range | Key Features |
|---|---|---|---|---|---|
| KX-CNA 3000 | Aramid fibers, NBR binder, additives | 1.6 - 1.8 | Up to 150 Bar | -50°C to +400°C | High tensile strength, excellent torque retention, suitable for irregular flanges |
| KX-PTFE 1000 | 100% Virgin Polytetrafluoroethylene | 2.1 - 2.3 | Up to 100 Bar, dependent on design | -260°C to +260°C | Universal chemical resistance, anti-stick, FDA compliant, excellent dielectric properties |
| KX-ePTFE 2000 | Expanded PTFE tape and sheet | 0.4 - 1.0 | Varies with form | -260°C to +315°C | Highly conformable, seals on low bolt load, used for thread sealing and valve packing |
The most critical factors are media compatibility, temperature range, pressure, application type, and regulatory standards. The seal must resist chemical attack, retain sealing force at operating temperatures, withstand system pressure, and meet industry certifications such as FDA, USP Class VI, NSF, or ATEX when required.
Elastomeric O-rings are ideal for contained gland designs such as piston, rod, and face seal grooves. They perform well in dynamic applications and seal with relatively low bolt load. Compressed fiber gaskets are used between static flanges and are chosen for their ability to fill surface imperfections, handle higher temperatures and pressures in static contexts, and reduce cost on large flanges.
Shore A hardness measures an elastomer's resistance to indentation. A lower number indicates a softer, more compliant material that conforms to rough surfaces and seals with low clamping force. A higher number indicates a harder, more rigid material with better resistance to extrusion under high pressure and higher wear resistance in dynamic applications.
PTFE is inert to almost all industrial chemicals, has an extremely wide temperature range, and has a very low coefficient of friction. It is suitable for highly corrosive media and sticky or viscous products. Its main limitations are creep under sustained load and relatively poor elastic recovery. These can be improved by using filled PTFE compounds or designed washers and retainers.
Store Kaxite CNA sheets in a cool, dry place away from direct sunlight, ozone sources, and excessive heat. Keep them flat and supported to prevent bending or creasing. Condition the material to shop temperature above 15°C before fabrication. Cut gaskets with sharp tools; die-cutting is preferred, but clean knife cuts are acceptable. Avoid punches that can delaminate the material layers.
Yes. Kaxite's R&D and formulation capabilities allow us to develop custom compounds when standard grades do not fully meet your temperature, pressure, chemical media, or physical requirements. The process includes requirement analysis, prototyping, laboratory testing, and field validation to deliver a reliable sealing solution.
Need a custom sealing material or bulk quotation? Send your inquiry to Kaxite and our engineering team will recommend the right material grade for your application.
