Corrugated Graphite Tape for Valve Packing
1. Product Overview
Material: Pure flexible graphite (strip-shaped sealing material)
Structure: Unique corrugated pattern on surface
Design Purpose: For gland area of industrial valves, pumps, rotating equipment
Core Value: Excellent sealing performance, long service life, easy installation; self-lubricating, high temperature/corrosion resistant; ideal replacement for traditional packings (asbestos, PTFE) in demanding applications
2. Main Features & Advantages
Sealing Performance: Flexible graphite fits valve stem & packing box wall perfectly; maintains good sealing under pressure fluctuations or slight valve stem wear
Temperature Resistance: Inert atmosphere: -200°C to +500°C; oxidizing environment: recommended ≤+400°C/+450°C; no melting, hardening or degradation
Self-lubricating: Graphite (solid lubricant) reduces valve stem friction & operating torque; ensures smooth operation, protects valve stem from wear
Chemical Inertness: Highly resistant to various acids, alkalis, solvents, organic compounds; suitable for corrosive chemical processes
Installation: Corrugated structure with high flexibility & toughness; easy to wrap valve stem, conforms to packing box geometry; no special tools needed
Service Life: Anti-aging, resistant to heat cycles & pressure shocks; reduces maintenance downtime, replacement frequency & total ownership cost
3. Main Applications
Widely used in industrial valves requiring reliable sealing, including but not limited to:
Chemical & Petrochemical: Valves (gate, globe, ball, regulating) in reactors, pipelines, pumps
Power Generation: Blow-off valves, steam system valves in power plants
Pharmaceutical & Food: Valves for hygiene-critical applications
Metallurgical: High-temperature hot air valves, gas valves
Paper: Process valves handling corrosive chemicals
4. Typical Technical Parameters
|
Parameter |
Typical Value / Description |
|
Main Material |
High-purity flexible graphite (carbon content >99%) |
|
Structure |
Rolled strip with regular corrugated pattern |
|
Standard Usable Density |
1.1 g/cm³ |
|
Thickness |
0.5mm, 0.8mm, 1.0mm, 1.5mm, 2.0mm, 3.0mm (customizable) |
|
Width |
6mm, 10mm, 12mm, 15mm, 20mm, 25mm, etc. (customizable) |
|
Temperature Range |
Inert atmosphere: -200°C to +500°C (or higher); oxidizing atmosphere: ≤+450°C (recommended) |
|
Chemical Resistance |
Resistant to most acids, alkalis, solvents (except strong oxidizing acids: concentrated nitric acid, sulfuric acid) |
|
Standard Packaging |
25kg per box; rolls available upon request |
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