Product Series

Model	Reinforcing Material	Characteristics	Suitable Conditions
Basic Type	Pure Aramid	General Purpose	Conventional Chemical
Graphite Type	Graphite Composite	High-Temperature Resistant	Steam Systems
PTFE Type	PTFE Composite	Corrosion Resistant	Strong Acid/Alkali Media
Conductive Type	Carbon Fiber Composite	Anti-Static	Explosion-Proof Areas

Technical Highlights

1.  Structural Innovation:

       Three-dimensional braiding technology.

       Gradient density design (dense surface layer / porous inner layer).

       Intelligent lubricating microcapsules.

2.  Functional Extensions:

       Optional wear indication function.

       Temperature-sensitive color-change warning.

       Conductive type (surface resistance 10³ - 10⁶ Ω).

Typical Applications

   Petrochemicals: Hydrogenation reactors, cracking units.

   Power & Energy: Boiler feed pumps, steam turbines.

   Aerospace: Fuel control systems.

   Military Equipment: Special hydraulic systems.

Installation Specifications

1.  Preparation:

       Shaft surface hardness ≥ HRC45.

       Surface roughness Ra 0.4-0.8 µm.

2.  Installation:

       45° angled cuts.

       Layered cross installation.

       Compression: 15-20%.

3.  Commissioning:

       Run-in period: 4-8 hours.

       Initial leakage: ≤ 100 ml/h.

Maintenance Recommendations

   Check tightening force every 2000 hours.

   Replenish lubricant every 5000 hours.

   Replacement criteria: Leakage > 300 ml/h or wear > 30%.

Certification Standards

   API 622 (fugitive emissions).

   ISO 15848 (valve sealing).

   EN 1366 (fire performance).

   ATEX (explosion-proof certification).

With its outstanding comprehensive performance, aramid packing demonstrates significant advantages in harsh operating conditions such as high temperature, high pressure, and strong corrosion. Its service life can be 3-5 times that of traditional materials, making it an ideal choice for upgrading seals in modern chemical plants.

Basic Physical Property Parameters

Performance  Indicator	Basic Type	Graphite Type	PTFE Type	Conductive Type	Test Standard
Main Composition	100% Aramid	Aramid 80%/Graphite 20%	Aramid 70%/PTFE 30%	Aramid 60%/Carbon Fiber 40%	ISO 18373
Density (g/cm³)	1.38-1.42	1.45-1.50	1.35-1.40	1.40-1.45	ISO 1183
Operating Temp. (°C)	| -196 ~ 260	-100 ~ 320	-70 ~ 260	-100 ~ 280	ASTM D865
Operating Pressure (MPa)	≤ 25	≤ 30	≤ 20	≤ 25	ISO 6003
Linear Speed (m/s)	≤ 20	≤ 15	≤ 18	≤ 12	DIN 24960

Mechanical Properties

Parameter	Basic Type	Graphite Type	PTFE Type	Conductive Type
Tensile Strength (MPa)	450-500	400-450	350-400	350-400
Compression Rate (%)	15-18	15-18	12-15	16-19
Rebound Rate (%)	≥ 85	≥ 80	≥ 90	≥ 75
Friction Coefficient	0.10-0.12	0.06-0.08	0.08-0.10	0.05-0.07

Specification Parameters

Size (mm)	Tolerance	Braiding Structure	Applicable Shaft Diameter (mm)
5×5	±0.10	8-spindle 3D braid	30-60
6×6	±0.12	10-spindle 3D braid	60-100
8×8	±0.15	12-spindle 3D braid	100-150
10×10	±0.20	16-spindle 3D braid	150-200

Medium Resistance Performance (Service Life in Hours)

Medium	Basic Type	Graphite Type	PTFE Type	Conductive Type
98% Sulfuric Acid	5,000-6,000	3,000-4,000	8,000-10,000	4,000-5,000
40% Sodium Hydroxide	6,000-8,000	6,000-8,000	10,000-12,000	6,000-7,000
Aviation Fuel	8,000-10,000	8,000-10,000	8,000-10,000	9,000-11,000
9,000-11,000	9,000-11,000	8,000-10,000	3,000-4,000	5,000-6,000

Special Properties

Special Properties	Basic Type	Graphite Type	PTFE Type	Conductive Type
Conductive Type	>10¹⁵	>10¹⁵	>10¹⁵	10³-10⁶
Limiting Oxygen Index	≥ 28	≥ 26	≥ 30	≥ 25
Thermal Conductivity (W/m·K)	0.6-0.7	1.2-1.5	0.4-0.5	0.8-1.0
Radiation Resistance (kGy)	≥ 500	≥ 300	≥ 600	≥ 400

Installation Parameters

Item	Standard Requirement	Specialized Tool
Shaft Surface Hardness	HRC45 or above	Rockwell Hardness Tester
Surface Roughness	Ra 0.4-0.8 µm	Surface Profilometer
Tightening Force	40-60 N/cm	Hydraulic Compression Equipment
Run-in Time	8h stepwise speed increase	Intelligent Control System

Application Guide

Industry	Recommended Model	Replacement Interval (h)	Recommended Model
Petrochemica	Basic Type	12,000-15,000	High-Pressure Resistance
Power & Energy	Graphite Type	10,000-12,000	High-Temperature Resistance
Pharmaceutical/Food	PTFE Type	15,000-18,000	Food-Grade
Explosion-Proof Areas	Conductive Type	12,000-15,000	Anti-Static

Notes:

1.  All data based on standard test conditions (20°C clean water medium).

2.  High-temperature type testing requires a dedicated cooling system.

3.  Surface resistance of the conductive type can be customized/adjusted.

4.  Actual service life is significantly influenced by operating conditions.