Garlock GYLON 3530 (Black Sheet)

Garlock GYLON 3530 PTFE with a graphite filler.

A high performance gasket sheet of PTFE with a graphite filler.  Withstands high concentrations of hydrofluoric acids and other glass-dissolving media.


Garlock GYLON® gasketing is a family of flat PTFE gasketing materials. GYLON® high-performance PTFE gasketing is manufactured using a proprietary process that imparts unique physical properties, which are not obtainable through conventional manufacturing methods: Designed for severe chemical service, color-coded for easy identification, superior sealability, which helps reduce process and media loss as well as fugitive emissions, reduced creep and cold flow characteristics, and patented thermal bonding process to fabricate virtually any size gasket. The innovative GYLON® gasketing process reorients the PTFE and fillers in such a way to increase the material’s tensile properties and decrease the creep relaxation problems that usually plague PTFE products. In addition, the mixing process creates a homogenous material with consistent, superior physical properties that, unlike inexpensive skived PTFE sheet materials, do not fluctuate from one side of the sheet to another. 



    • Tighter seal
    • Graphite-filled PTFE offers extremely low void content for minimal emissions
    • Black GYLON® delivers long service against volatile hazardous pollutants (VHAP and VOC)
    • Withstands high concentrations of hydrofluoric acids and other glass-dissolving media


Compatible With:

    • Monomer service
    • Cryogenics
    • Highly concentrated hydrofluoric acid
    • Volatile hazardous air pollutants (VHAP)




Garlock GYLON 3530 Gasket Sheets are available in these sizes:

1/16” X 60” X 60”

1/8”   X 60” X 60”

 Note: Other thicknesses and sheet sizes may be available by special order.


Min. Temp

-450° F

Max Temp

 500° F

Max Pressure

1,200 PSI

Max PXT 1/16”

350,000 (°F X PSIG)

Max PXT 1/8”

250,000 (°F X PSIG)



Garlock 3530 Resource Page


1335 West 11th Street, Long Beach, CA 90813-2714

Phone: 562-435-2411 | Fax: 562-436-2140

Open to the Public Monday - Friday 8 am - 5 pm