Huahao Sealing · Carbon Graphite Components
Professional manufacturer of carbon graphite seal rings, bushings/bearings, and split rings. Custom machining supported. Serving 1,000+ global customers, exporting to 15+ countries.
From standard mechanical seal faces to drawing-based graphite bushings, bearings and segmented rings, Huahao supports OEM buyers and maintenance teams with stable, traceable carbon graphite parts.
For centrifugal pumps, chemical pumps, seawater pumps and general mechanical seals.
More
For submersible pumps, marine equipment, agitators and heavy-duty rotating machinery.
More
For enclosed cavities where maintenance is needed without removing the shaft.
MoreShare dimensions, tolerances, medium, temperature, pressure and speed. Our team can recommend material grade and machining approach.
Contact our engineering team for technical specifications, custom solutions, or competitive quotes. We'll respond within 24 hours.
If you are facing frequent seal failures, carbon graphite may be the answer you have been looking for.
Ordinary seals wear out within months. Frequent replacements drive up maintenance costs. Each replacement means equipment disassembly and production line downtime.
Seal failure causes media leakage, safety hazards, and environmental penalties. A single seal failure can result in regulatory fines.
Emergency shutdowns from seal failure disrupt production and delay deliveries. Every unplanned stoppage directly impacts your bottom line.
Carbon graphite has natural self-lubricating properties, eliminating the need for external lubrication systems and significantly reducing maintenance costs. Suitable for high-speed rotation, maintaining lubrication even during start-up and shutdown.
Stable operation at 300°C long-term, with short-term peaks up to 350°C. Special anti-oxidation impregnation ensures consistent performance in high-temperature environments.
Chemically inert carbon graphite resists most acids, alkalis, and organic solvents. Impregnation further enhances durability in highly corrosive media.
Advanced impregnation technology creates a hard, durable sealing surface, significantly extending service life compared to ordinary materials. Wear resistance improved by 60-80%.
Self-lubricating, wear-resistant, corrosion-resistant — Huahao carbon graphite seals extend service life by 3-6x, eliminate leakage, and reduce unplanned downtime.
With over 20 years of specialized manufacturing, we utilize advanced CNC machining centers and precision inspection equipment. Every component undergoes rigorous quality control before shipment.
High-precision automated machining
In-house material testing & R&D
100% dimensional & performance testing
Engineering support for special needs
Micron-level dimensional check
Pressure & seal integrity test
Ra 0.1μm precision analysis
Material hardness verification
Our sealing solutions are trusted across industries worldwide.
Real results from real partnerships. Discover how our sealing solutions solve complex industrial challenges.
Tunnel oven working at 300°C, conveyor shaft 45mm, 80rpm. Copper bushings + high-temp grease failed every 2 months.
Molten salt pump at 450°C, shaft 65mm, 1500rpm. Special alloy bearings suffered frequent seizure, 3-month average life.
Chocolate mixer, shaft 30mm, 200rpm, 80°C. Copper bushings + food-grade grease caused copper ion and grease contamination.
Centrifugal pump handling corrosive chemicals, shaft 50mm, 1450rpm, 80-120°C. PTFE seals leaked every 3 months.
Seawater pump, shaft 60mm, 1750rpm. Copper bearings + rubber seals corroded in seawater, replacement every 6 months.
Large circulating water pump, shaft 120mm, 990rpm, 60-95°C. Tin bronze bearings wore rapidly, monthly maintenance.
Contact our engineering team for technical specifications, custom solutions, or competitive quotes. We'll respond within 24 hours.
Customers across six continents, products exported to Europe, Asia, Americas, and the Middle East
