Powder
Expandable graphite grade for gasket and seal compounds; expands on heat to form a tight, resilient barrier.
Share furnace type, diameter, grade, tonnage, and destination port for a factory quote.
Ordering
MOQ, packing, lead time, and export documents for factory-direct shipments.
From 1 container / negotiated MT on stock grades
Wooden cases with moisture protection for ocean freight
Typically 15–30 days depending on diameter and grade
FOB, CIF, CFR available
COA, packing list, commercial invoice, B/L
Overview
Expandable graphite is intercalated natural flake graphite that expands when heated, forming a vermicular mass. In gasket sheets and sealants it improves fire resistance and gap filling under thermal load.
Specify expansion onset temperature, expansion volume, and carbon content to match flange or packing service conditions.
Specs
Key dimensions and performance values. Request the full drawing pack with your RFQ when needed.
| Performance classification | P erformance parameters | S pecific data |
| Physical properties | Packing density | 0.002-0.015 g/cm 3 |
| True density | 2-2.25 g/cm 3 | |
| Particle size – Fine powder | ||
| Particle size – Medium powder | 100-500μm | |
| Particle size – Coarse powder | >500μm | |
| Expansion factor | 100-300 times | |
| Chemical properties | Carbon content | More than 90%-99% |
| Ash content | About 1% to 10% | |
| Electrical conductivity | 10 2 -10 4 S/m | |
| Thermal properties | Thermal conductivity | 0.1-0.5 W/(m.k) |
Send grade, size, quantity (MT) and destination port.
