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Gylon Gasket Material

Typical Physical Properties*

    This is a general guide and should not be the sole means of selecting or rejecting this material.
    ASTM test results in accordance with ASTM F-104.
    Properties based on 1/32" (0.8mm) sheet thickness, except Style 3565, based on 1/16" (1.6mm).

 

* Values do not constitute specification limits
Notes:
Based on ANSI RF flanges at our preferred torque. When approaching maximum pressure or temperature, or 50% of maximum PxT, consult Garlock Engineering. For Styles HP 3560 and HP 3561, consult Garlock if approaching maximum temperature, or 50% of maximum pressure or P x T.
2 Except 3504 and 3535: 800 psi (55 bar).
3 For 3540, 3545, HP 3560, HP 3561, 1/16" thickness only; for 3535, 1/4" thickness only.
4 ASTM F37B Sealability, milliliters/hour (1/32" thick) ASTM Fuel A (isooctane): Gasket load = 1000 psi (7 N/mm2), Internal pressure = 9.8 psig (0.7 bar) 5 DIN 3535 Part 4  Gas Permeability, cc/min. (1/16" thick) Nitrogen: Internal pressure = 580 psig (40 bar), Gasket load = 4640 psi (32 N/mm2)

 

 

Benefits
Tighter seal

    Improved performance over conventional PTFE

    Reduced product loss and emissions

Reduced creep relaxation

    Unique manufacturing process minimizes cold flow problems typical of skived and expanded PTFE sheets

    Excellent bolt torque retention

Chemical resistance
Cost savings
    Cuts operational costs through reduced:
Largest sheet sizes*

    Offers some of the largest sheet sizes in the industry

    Improved material utilization reduces waste

Branding and color coding

    Easy identification of superior GYLON® products

    Reduces misapplication and use of unauthorized, inferior substitutes

*   60"x 60" (1524 mm x 1524 mm), 70" x 70" (1778 mm x 1778 mm), 60" x 90" (1524 mm x 2286 mm)
Media
GYLON® 3500: Strong acids (except hydrofluoric), solvents, hydrocarbons, water, steam, chlorine, cryogenics (For oxygen service, specify "Style 3502 for oxygen service.")
GYLON® 3504: Moderate concentrations of acids and some caustics, hydrocarbons, solvents, water, refrigerants, cryogenics, hydrogen peroxide (For oxygen service, specify "Style 3505 for oxygen service.") GYLON® 3510: Strong caustics, moderate acids, chlorine, gases, water, steam, hydrocarbons, cryo­genics and aluminum fluoride (For oxygen service, specify "Style 3503 for oxygen service.")
 
Test Data
Compression at 2000 psi (14 N/mm2) for 1 hour at 500°F (260°C)

Before            After

Style 3510 Off-White
Style 3504 Blue
Style 3500 Fawn
Conventional PTFE
Properties/applications shown throughout this brochure are typical. Your specific ap­plication should not be undertaken without independent study and evaluation for suit­ability. For specific application recommendations consult Garlock®. Failure to select the proper sealing products could result in property damage and/or serious personal injury. Performance data published in this brochure has been developed from field testing, customer field reports and/or in-house testing. While the utmost care has been used in compiling this brochure, we assume no responsibility for errors. Specifications subject to change without notice. This edition cancels all previous issues. Subject to change without notice.

GARLOCK® is a registered trademark for packings, seals, gaskets, and other products of Garlock®.