PTFE Graphite Gland Packing: A Comprehensive Guide to Flexible Graphite Gland Packing and Graphite Packing Seals- Jiangsu Jintai Sealing Technology Co., Ltd.

PTFE Graphite Gland Packing: A Comprehensive Guide to Flexible Graphite Gland Packing and Graphite Packing Seals

Jiangsu Jintai Sealing Technology Co., Ltd.

2025.05.15

Industry News

PTFE graphite gland packing is a high-performance sealing solution widely used in industrial applications to prevent leakage in pumps, valves, and rotating equipment.

Valves Pump Gland Packing Seals White Pure PTFE Gland Packing

What Is PTFE Graphite Gland Packing?

PTFE graphite gland packing combines polytetrafluoroethylene (PTFE) with graphite to create a durable, low-friction, and chemically resistant sealing material. It is ideal for applications involving aggressive chemicals, high temperatures, and dynamic shaft movements.

Key Features:
Chemical resistance – Resists acids, alkalis, and solvents.
Low friction – Reduces wear on shafts.
Temperature range – Typically -200°C to +260°C (short-term up to 280°C).
Pressure resistance – Suitable for medium to high-pressure applications.

Comparison: PTFE Graphite vs. Flexible Graphite Gland Packing vs. Graphite Packing Seal

Parameter	PTFE Graphite Gland Packing	Flexible Graphite Gland Packing	Graphite Packing Seal
Temperature Range	-200°C to +260°C	-200°C to +450°C (inert gases up to 650°C)	-200°C to +500°C
Chemical Resistance	Excellent (PTFE-based)	Good (but oxidizes in strong acids)	Excellent (pure graphite)
Friction Coefficient	Low (PTFE reduces friction)	Moderate (self-lubricating)	Moderate to high
Pressure Resistance	Medium to high (up to 150 bar)	High (up to 200 bar)	Very high (up to 300 bar)
Applications	Pumps, valves, mixers (chemical industry)	High-temperature steam valves, boilers	Extreme pressure/temperature environments

Choosing the Right Packing for Your Application

PTFE graphite gland packing – Best for chemical resistance and moderate temperatures.
Flexible graphite gland packing – Ideal for high-temperature steam and gas applications.
Graphite packing seal – Suited for extreme pressure and thermal cycling.

Each type of graphite-based packing offers unique advantages. PTFE graphite gland packing excels in chemical resistance, while flexible graphite withstands higher temperatures, and pure graphite seals handle extreme pressures.