China Flexible Composite Graphite Sheet 30m 50m 80m Length with Metal Layers for High-Temperature Sealing for sale

Flexible Composite Graphite Sheet 30m 50m 80m Length with Metal Layers for High-Temperature Sealing

Price Negotiable

Price: 2.2USD PER KG

MOQ: 500kg

Delivery Time: 20 days

Brand: CLINGSEAL

Product Description

Flexible Composite Graphite Sheet with Metal Layers

Low-cost flexible graphite gasket material manufactured through chemical intercalation and high-temperature exfoliation processes, resulting in pure, binder-free graphite rolls with exceptional performance characteristics.

Key Properties

High chemical resistance and radiation tolerance
Extreme temperature stability from -200°C to +650°C
Superior compression recovery and self-lubricating characteristics
Excellent gas/tightness performance
Exceptional purity with 99% carbon concentration

Application Fields

Core material for packing rings
Composite sheets with metal layers for custom-shaped gaskets
Thick sheets for low-pressure seals or high-temperature insulation pads

Standard Specifications

Roll Width: 1000mm / 1500mm

Roll Length: 30m / 50m / 80m

Sheet Size: 1000mm×1000mm / 1500mm×1500mm

Thickness Range: Rolls: 0.15-1.0mm, Sheets: 1.0-5.0mm

Density: 0.8-1.25g/cm³

Custom configurations available upon request

Technical Specifications

Parameter	Standard Value
C concentration	99%
S concentration	<1000ppm
Chlorine concentration	<45ppm
Tensile strength	4.5MPa
Compressibility	>40%
Recovery	>10%
Temperature range	-200°C to 600°C
Pressure rating	20MPa
Thickness tolerance	-0.04mm to +0.04mm
Density tolerance	-0.06g/cm³ to +0.06g/cm³

Quality Grades (JB/T53392-1999)

Mechanical Data	Qualified Product	Top Grade	Superior Grade
Tensile Strength (MPa)	≥3.2	≥4.5	≥5.0
Compression Ratio (%)	35-55
Rebound Rate (%)	≥9	≥11	≥12
Stress relaxation rate (%)	≤10
Ash (%)	≤6.0	≤3.0	≤1.0
Sulphur content (ppm)	≤1500	≤1000	≤600
Chloride content (ppm)	≤100	≤50	≤20