Polytetrafluoroethylene (PTFE) Gaskets, often referred to as Teflon™ Gaskets, are sealing components manufactured from PTFE, a superior performance engineering plastic. Renowned for their unparalleled chemical inertness, extreme temperature tolerance, exceptional non-stick properties, and low friction, they are the premier sealing solution for demanding applications involving strong corrosion, high/low temperatures, and high purity.

 Core Characteristics & Advantages

 Detailed Product Parameters & Specifications

1. General Physical & Mechanical Properties Table

Parameter	Unit	Value (Virgin PTFE)	Test Standard
Density	g/cm³	2.10 - 2.30	ASTM D792
Continuous Service Temperature	°C	-200 to +260	-
Short-Term Max Temperature	°C	300	-
Tensile Strength	MPa	≥ 25	ASTM D638
Elongation at Break	%	≥ 300	ASTM D638
Coefficient of Friction	-	Coefficient of Friction	Vs. Steel, Dynamic
Thermal Conductivity	W/m·K	0.25	ASTM C177
Coefficient of Linear Thermal Expansion	cm/cm/°C	1.2 × 10⁻⁴	ASTM D696

2. Main Product Types & Selection Guide

Product Type	Key Characteristics	Typical Pressure Range	Temperature	Range Media Compatibility	Color
Virgin PTFE Gaskets	Best overall chemical resistance, high purity, flexible	Low to Medium	-200°C to +260°C	Virtually all chemical media	White
Glass-Filled PTFE	Greatly improved creep resistance, stiffness, pressure capability	Medium to High	-200°C to +260°C	General corrosive media	Brown/White
Graphite-Filled PTFE	Better recovery, improved thermal conductivity, lasting seal	Medium	-200°C to +260°C	Most media except strong oxidizing acids	Black
Carbon-Filled PTFE	Excellent wear resistance, thermally conductive, anti-creep	Medium to High	-200°C to +260°C	General corrosive media (Abrasive applications)	Black

3. Standard Size Specifications (Custom Sizes Available)

Shape	Inside Diameter (ID)	Outside Diameter (OD)	Thickness (T)	Common Standards
Round Gaskets	6mm ~ 500mm	12mm ~ 600mm	0.5mm, 1.0mm, 1.5mm, 2.0mm, 3.0mm	DIN, ANSI, JIS
Square/Rectangular Gaskets	-	Up to 600mm (Length/Width)	1.0mm ~ 5.0mm	Custom to Drawing
Rod (for Machining)	5mm ~ 200mm	-	Lengths up to 1000mm	-
Sheet	-	1000mm x 1000mm	1mm ~ 50mm	-

Primary Applications

· Chemical Processing Industry: Sealing for reactors, columns, heat exchangers, pipelines, valves, and pumps.

· Pharmaceutical & Food Industry: FDA-compliant grades used in fermenters, transfer lines, and filling equipment for sanitary applications.

· Electronics & Electrical: Insulation and sealing in semiconductor manufacturing, high-purity chemical delivery systems, and high-frequency communication equipment.

· Mechanical & Automotive: Various seals in hydraulic systems, lubrication systems, engines, and transmissions.

 Selection & Installation Notes

· Virgin PTFE Gaskets are suitable for the vast majority of highly corrosive services and high-purity applications.

· Glass or Carbon-Filled PTFE is recommended for applications requiring higher creep resistance and pressure capability.

· Graphite-Filled PTFE is the preferred choice for thermal cycling applications or where better seal recovery is needed.

· For installation, ensure flange faces are clean and flat. Bolts should be tightened evenly and in a crisscross pattern to avoid localized stress and gasket damage.

Summary: Our comprehensive range of Polytetrafluoroethylene (PTFE) Gaskets, backed by detailed performance data and flexible specifications, provides precise and reliable sealing solutions, making them a critical component for enhancing equipment safety and operational integrity.