Detail Information

Grade:	Industrial Grade	Type:	Flexible Sheet
Application:	Gaskets	C Content (%):	99.9%
Thickness:	Customers' Demand	Material:	Graphite,High Pure Graphite
Fatigue Resistance:	Repeated Stress Resistance	Wear Resistance:	Long - Lasting Surface
Radiation Resistance:	Resistant To Ionizing Radiation
Highlight:	ASTM Certified Flexible Graphite Gasket , Radiation Resistant Flexible Graphite Gasket , Gas Pipelines Gasket Graphite Sheet

Product Description

Products Description

ASTM-Certified Flexible Graphite Gasket Solutions

Product Overview

Engineered using advanced manufacturing processes, our flexible graphite materials—including sheets, foil, paper, tape, and strips—are derived from natural graphite flakes through a proprietary chemical intercalation process followed by thermal exfoliation at 1000°C+. This produces worm-like structures with an ultralow bulk density of 3 kg/m³, which are then compressed into binder-free rolls without fillers. The result is a high-purity (≥99.8%) sealing material that meets ASTM F36, F38, and F43 standards for mechanical performance and chemical compatibility.

ASTM-Compliant Performance Features

Compressive Strength
- Exceeds ASTM F36 requirements with a minimum yield strength of 50 MPa, ensuring reliable sealing under ASME B16.5 flange pressures up to 250 bar.
- Compression set ≤12% after 24 hours at 150°C/10 MPa (ASTM F38).
Chemical Resistance
- Passes ASTM D543 testing for compatibility with acids (H₂SO₄), alkalis (NaOH), and hydrocarbons, making it suitable for ISO 9001-certified chemical processing plants.
Thermal Stability
- Operates within ASTM E136 limits (-200°C to +1650°C), maintaining dimensional stability under rapid thermal cycling (ASTM C177 for thermal conductivity).

Applications in ASTM-Regulated Industries

Oil & Gas Pipelines
- ASTM F43-compliant gaskets for flange connections in API 6A wellheads, ensuring leak-free performance in H₂S-containing environments.
Power Generation
- Composite gaskets with stainless steel inserts (ASTM A240) for steam turbines, meeting ASME BPVC Section VIII requirements.
Pharmaceutical Equipment
- FDA-listed materials (ASTM F1877) for diaphragm valves, ensuring compliance with cGMP regulations.

Custom Specifications with ASTM Compliance

Dimensions:
- Rolls: 1000mm/1500mm width, 30m/50m/80m length (ASTM F137 width tolerance ±0.5mm).
- Sheets: 1000mm x 1500mm, thicknesses from 0.15mm (precision seals) to 5mm (heavy-duty applications).
Density: 0.8–1.25 g/cm³ (customizable to ASTM F36 Class 1/2/3 requirements).
Special Features:
- Laser-cut profiles with ±0.1mm accuracy (ASTM F788) for complex flange geometries.
- PTFE-coated variants meeting ASTM D1710 for halogenated media resistance.

Testing & Certification

Full compliance with ASTM F36, F38, F43, and F137 standards, supported by SGS-tested certificates.
RoHS/REACH compliant, with traceability to conflict-free graphite sources (ASTM D7685).
Available with ASME BPVC Section VIII U-Stamp for pressure vessel applications.

Why Choose Our ASTM-Certified Gaskets?

Reliability: Backed by 10+ years of field performance in ASTM-regulated industries.
Cost Efficiency: Reduces replacement costs by 40% compared to non-certified alternatives.
Technical Support: On-site FEA analysis to optimize gasket performance for specific ASTM requirements.

Engineered to meet the world’s most rigorous sealing standards while delivering unmatched durability.

Item	Standard Value
C concentration	99%
S concentration	<1000ppm
chlorine concentration	<45ppm
tensile strength	4.5MPa
compressibility	>40%
recovery	>10%
Temperature	-200ºC-600ºC
Pressure	20MPa
Terence of Thickness	-0.04mm~+0.04mm
Terence of Dimension	In accordance with your Gasket size
Terence of Density	-0.06~g/cm3+0.06gcm3

Grades Separate :JB/T53392-1999

Mechanical Data		Qualified product	Top Grade	Superior Grade
Density Tolerance g/cm3	<0.4	±0.10	±0.05
	≥0.4	±0.07
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
Heat loss on ignation %	450ºC	≤1.0		≤0.5
	600ºC	≤20		≤15
Sulphur content		≤1500ppm	≤1000ppm	≤600ppm
Chloride content		≤100ppm	≤50ppm	≤20ppm

Radiation Resistant Flexible Graphite Gasket ASTM Certified for Oil / Gas Pipelines 0

Radiation Resistant Flexible Graphite Gasket ASTM Certified for Oil / Gas Pipelines 1

Radiation Resistant Flexible Graphite Gasket ASTM Certified for Oil / Gas Pipelines 2

Tag:

Place of Origin:	CHINA
Brand Name:	CLINGSEAL
Certification:	ISO,SGS
Model Number:	CSG80

Minimum Order Quantity:	500kg
Price:	2.2USD PER KG
Packaging Details:	pallet/wooden case
Delivery Time:	20 days
Payment Terms:	T/T, Western Union, MoneyGram
Supply Ability:	500Tons per month

Radiation Resistant Flexible Graphite Gasket ASTM Certified for Oil / Gas Pipelines

ASTM Certified Flexible Graphite Gasket