PTFE (Teflon®) Gaskets

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Important: If you have any uncertainties about what material to use, just call us! We have employees that have been selling gaskets and servicing gasket applications for decades. We have sold gaskets in over 100 different materials!  What follows below are generalizations for different categories of gasket materials.  Use the information below only as a general guideline, and not as advice for your specific application.   

 

PTFE (Teflon®) Gaskets:  Simply, PTFE is a plastic incredibly resistant to chemicals, making it an ideal gasket material in certain applications. Technically, polytetrafluoroethylene is a fluoropolymer (contains flourine and carbon) originally developed by DuPont® in 1938. PTFE has one of the lowest coefficients of friction of any solid. It is non-reactive, partly because of the strength of carbon–fluorine bonds, and so it is often used in containers and pipework for reactive and corrosive chemicals. (more technical info)  PTFE is commonly used in applications with corrosive chemicals, as well as in food processing and pharmaceutical applications.  However, PTFE has lower heat thresholds than graphite or fiber-based gasket materials.  

 

Common Materials (Available Online) All Materials We Carry (call for items not sold online) - Alphabetical by Material Class
PTFE (Teflon) PTFE (Teflon)

Durlon® 9000

Garlock® G3510

DURLON® 9000

DURLON® 9000N

DURLON® 9200W

GARLOCK® 3500

GARLOCK® 3504

GARLOCK® G3510

GARLOCK® 3540

GARLOCK® 3545

GARLOCK® 3565

TEFLON®

TEADIT® 1570

TEADIT® 1580

TEADIT® 1590

TEADIT® QUIMFLEX SH

 

 

Durlon® 9000 Specs

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 Specification: Value:
Materials Inorganic
Temperature Minimum -350° F
Temperature Maximum 520° F
Continuous Temp Max. 548° F
Pressure Max. 1500 psig
Density 2.2 g / cm3
Tensile Strength 2,000 psi
Compressibility ASTM F36 8 - 16%
Recovery ASTM F36 40%
Sealability F37 (Fuel A) 0.01 mL/hr
Sealability F37 (Nitrogen) 0.02 mL/hr

Manufacturer Spec Sheet

 

 

Garlock® Gylon® 3510 Specs

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 Specification: Value:
Materials PTFE with Barium Sulfate
Temperature Minimum -450° F
Temperature Maximum 500° F
Continuous Temp Max. NA
Pressure Max. 1,200 psi
Density 1.6 g / cm3
Tensile Strength 2,250 psi
Compressibility ASTM F36 4-10%
Recovery ASTM F36 40%
Sealability F37B (Fuel A) 0.04 mL/hr

Manufacturer Spec Sheet