Excellent wear resistance

Technical Parameter Table

Performance Indicator	Parameter Range	Test Standard
Density	1.7 ~ 2.0 g/cm³	ISO 5017
Tensile Strength	40 ~ 80 MPa	ASTM D638
Compressive Strength	50 ~ 100 MPa	ASTM D695
Thermal Conductivity	80 ~ 150 W/(m·K)	ASTM E1461
Electrical Resistivity	8 ~ 15 μΩ·m	ASTM D6113
Chemical Compatibility	pH 0 ~ 14	ASTM D543

Application Fields

   High-Temperature Equipment: Boilers, heaters, hot air valves

   Chemical Installations: Reactors, towers, heat exchangers

   Energy Equipment: Steam turbines, compressors

   Special Equipment: Spacecraft, nuclear facilities

Selection Guide

1.  Standard Conditions: Standard graphite packing ring

2.  High-Pressure Conditions: Metal wire reinforced type

3.  Corrosive Environments: Special impregnation treatment type

4.  High-Speed Rotation: Carbon fiber composite type

Key Installation Points

1.  Clean the seal cavity

2.  Use 45° diagonal cuts

3.  Install layers in a staggered pattern

4.  Preload force: 15 ~ 25 MPa

5.  50-hour run-in period before full operation

Precautions

1.  Avoid contact with strong oxidizing agents

2.  Prevent mechanical damage during installation

3.  Regularly check the tightening status

4.  Special treatment required for use above rated temperature

With their outstanding high-temperature performance and sealing reliability, graphite packing rings have become the preferred sealing solution for modern industrial high-temperature applications. We can provide customized product specifications and technical services based on specific customer requirements.

Basic Specification Parameters

Basic Specification Parameters	Parameter Specification	Test Standard	Remarks
Material	Expanded Graphite + Reinforcing Fibers	ASTM F1314	Includes impregnation treatment
Cross-section Shape	Square / Round	-	Customizable
Standard Size	3-50 mm	ISO 3601	Tolerance ±0.1 mm
Color	Black / Silver-gray	Black / Silver-gray	Silver-gray indicates metal wire inclusion

Physical Performance Parameters

Performance	Standard Type	Reinforced Type	Reinforced Type
Density (g/cm³)	1.7-1.9	1.9-2.1	ISO 5017
Compression (%)	25-30	20-25	ASTM F36
Resilience (%)	≥30	≥35	ASTM F1314
Coefficient of Friction	0.08-0.12	0.05-0.08	ASTM D1894

Condition Adaptability

Environmental Condition	Tolerance Specification	Limit Value	Remarks
Temperature Range	-200~600°C	800°C	Inert Gas
Pressure Range	≤35 MPa	50 MPa	Short-term pressure
Linear Speed	≤20 m/s	≤20 m/s	Water-lubricated
pH Range	0-14	-	Except strong oxidizers

Mechanical Performance Comparison

Model	Tensile Strength (MPa)	Compressive Strength (MPa)	Wear Rate (mm³/h)
G-10	40-50	50-65	0.01-0.03
G-20	50-65	50-65	0.01-0.03
G-30	50-65	75-100	0.005-0.015

Product Series Comparison

Model	Reinforcing Material	Applicable Temperature	Primary Application
G-10	None	None	Standard static sealing
G-20	Stainless Steel Wire	≤600°C	Dynamic sealing
G-30	Carbon Fiber	≤800°C	Ultra-high temperature sealing
G-40	Ultra-high temperature sealing	≤1000°C	Special conditions

Certification Standards

Certification System	Standard Number	Test Item
Test Item	622	Fugitive Emissions Sealing
ISO	15848	Life Test
ASME	B16.20	Pressure Test
FDA	21CFR177.2600	Food Grade

Notes:

1.  All data is based on standard test conditions.

2.  Application factors must be considered in practical use.

3.  Custom solutions can be provided for special conditions.