Ameri-lon® includes our PTFE based product lines.  including virgin PTFE, Filled PTFE, Re-structured HS10 PTFE Gasket Materials, PTFE Packings and V-Packing.


Seal Products

Gasket Material and Gasket Supply is our Specialty. American Seal and Packing is a leading manufacturer & distributor of seals for industry: PTFE, Biaxial PTFE, EPTFE, Non-Asbestos, Flexible Graphite, Grafoil® Flexible Graphite, Mica, Viton, and other gasket materials, cut or in sheet. We’re finding better ways to serve our customers all the time. In addition to our expanding line of industrial sheet gasketing, we’re updating and upgrading equipment, and capabilities to provide you a better more cost effective product.

Ameri-lon® 9504

Ameri-lon® 9504 is a true re-structured PTFE gasket sheet with excellent physical properties to be used in the most demanding applications. Its unique construction limits the cold flow problems associated with skived PTFE sheets. It is very effective in applications where available bolt load is low due to its glass sphere content.
Color: Blue

Ameri-lon® 9510

Ameri-lon® 9510 is a true re-structured PTFE gasket sheet with excellent physical properties to be used in the most demanding applications. Its specific construction of virgin PTFE and Barium Sulfate fillers, limits both creep and cold flow in service and at temperature.
Color: Off White

mechanical seals

Ameri-lon® 9500

Ameri-lon® 9500 is a premium re-structured PTFE gasket sheet with excellent physical properties that can be used in most strong acids, except for Hydrofluoric acid. 9500 is made of 100% PTFE and silica fillers.
Color: Sand

HS10 Ameri-lon® Sheets:

The HS10 process developed by Dupont, greatly reduces cold flow by changing the way the sheets are manufacturered. Most PTFE and re-structured PTFE (filled PTFE) sheets are made in large round Billets, then sheets are skived off the billet with a large blade set to the thickness of the desired sheet of material. The HS10 process makes sheets, which are made in a layering process (prior to curing) which orients the alternating layers in different directions. The result is the sheet has a near uniform tensile strength, and one uniform layer thick). This process is more labor intensive and slower in production but results in a product that is not near as prone to cold flow or creep relaxation.

mechanical seals

Ameri-lon® PTFE sheets are available in: 24″ X 24″, 36″ X 36″, 48″ X 48″ and 60″ X 60″ sizes in thick nesses from 0.010″ to ¼”.

Ameri-lon® Physical Properties (printable)

Ameri-lon® a new family of products. Ameri-lon® is the result of years of experience in producing PTFE materials. It is designed for a wide range of demanding industrial requirements including gasket and bearing applications. Ameri-lon® is filled PTFE, uniquely combining the properties of PTFE and filler materials in a biaxial manor. Meaning the tensil strength around the sheet is consistant. The filler enhances the physical properties of PTFE and results in a superior gasket material. Ameri-lon® shows less cold flow and greater sealing ability than other filled PTFE materials or Fluorocarbons. It maintains the chemical attack resistance and the temperature range of PTFE.

Ameri-lon® is available in a wide range of products including gaskets, sheet, molded tube and rod as well as finished and machined items

Ameri-lon® can be considered as an equivalent to the Garlock Gylon® Product range. The interchange for the Ameri-lon® products is as follows:

  • Ameri-lon® 9504 = Gylon® 3504
  • Ameri-lon® 9510 = Gylon® 3510
  • Ameri-lon® 9500 = Gylon® 3500
  • Ameri-lon EPTFE = Expanded PTFE
  • Ameri-lon® PTFE Sheet Gasketing = Gylon Chemrex 3570
  • We also offer FMI S60/ S66 = Gylon® 3450/3545

Ameri-lon Pump /Valve Packing

  • Compatible with chemicals
  • Naturally Lubricious
  • pH-0-14
  • 300 PSI in a Pump
  • 4000 PSI in a Valve
  • Shaft Speed to 4500 FPM
  • Temp Range -328 to 536 F
  • In Stock!

$75.00 / lb.

* This is to be used as a general guide only. All applications should be considered individually based on the temperature, pressure, media being sealed, Ph, gasket dimensions, torque load, bolt size and any other factor effecting the gasket. For assistance in determining the suitability of an application contact our technical staff at American Seal & Packing. No application should be undertaken by anyone without independent study and evaluation for suitability. Never use more than one gasket in one flange joint, and never reuse a gasket. Improper use or gasket selection could cause property damage and/or serious personal injury. Data reported in these pages is a compilation of field testing, field service reports and/or in-house testing. While the utmost care has gone into publishing the information contained herein, we assume no responsibility for errors. Specifications and information contained in these pages are subject to change with notice. This edition cancels and obsoletes all previous editions.

Ameri-lon® is a registered trademark of American Seal & Packing
Gylon® is a registered trademark of Garlock Sealing Technologies.

Ameri-lon® inquiries can be answered by our Inside sales Staff at 714-361-1435 by Fax at 714-593-9701 or by E-mail at

Mechanical Seals, Gaskets, O-rings and Seals

Seals Specialists

AS&P cuts gaskets, distributes a wide range of seals, repairs mechanical seals, stocks sheet gasket material & pump and valve packing braided packing.
Stocking and representing quality lines like AS&P, Durlon, Lamons, Thermoseal, Grafoil, AST, Vulcan but not U.S. Seal Mfg.


Expanded PTFE Sheet

  • Soft / Conformable
  • Industrial / OEM Grade
  • 100% EPTFE
  • FDA Approved
  • Flexible, Easy to cut
  • Good for temps to 650 F (Peak)
  • Excellent in Cryogenic applications
  • Temp Range 600 F (Continuous)
  • Durlon Style 9600
  • 0-14 pH

$968 (1/16″)

PTFE Sheet (hard)

  • Compatible with most media
  • Industrial / OEM Grade
  • 100% PTFE
  • FDA Approved
  • 0-14 PH
  • Good for temps to 500 F (Peak)
  • Excellent in Cryogenic applications
  • If Dupont Resin referred to as Teflon

$356.40 (1/16″)

Silica Filled
PTFE Sheet

  • Compatible with most media
  • Resistant to COLD FLOW
  • PTFE with Silica
  • FDA Approved
  • 0-14 PH
  • Good for temps to 500 F (Continuous)
  • Excellent in Cryogenic applications
    -450 F
  • PXT (1/16″) 350,000

$812.85 (1/16″) 59x 59″

Glass microspheres with
PTFE Sheet Gasketing

  • 800 PSI
  • Chemical Compatibility
  • PTFE with glass microspheres
  • FDA Approved
  • 0-14 PH
  • Good for temps to 500 F (Peak)
  • Excellent in Cryogenic applications
  • to -450 F
  • PXT 350,000

$912.87 (1/16″) 59″ x 59″

Barium Sulfate filled
PTFE Sheet 9510 / FMI S33

  • Most Chemically Compatible
  • 1,200 PSI
  • PTFE with Barium Sulfate
  • FDA Approved
  • 0-14 PH
  • Good for temps to 500 F (Peak)
  • Excellent in Cryogenic applications
    to -450 F
  • PXT 350,000

$1,004.56 (1/16″) 59″ x 59″


What is the difference between PTFE and Teflon?

Teflon™  can only be sold by those companies granted a trademark license from Chemours.  Chemours (formerly Dupont) discovered the compound in 1938. Today, there are multiple manufactures of PTFE.  An incomplete list includes:




 ©2020 The Chemours Company. Chemours™ and the Chemours Logo are trademarks or registered trademarks of The Chemours Company. 

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