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:

¹ 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

• Withstands a wide range of chemicals for extended service life in a wide variety of applications

Cost savings

■    Cuts operational costs through reduced:

• Fluid loss • Inventory costs

• Energy consumption • Waste

• Maintenance costs

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