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WARNING:
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.
GYLON® Gasketing
C-11
Notes:
1 Based on ANSI RF flanges at our preferred torque. When approaching
maximum pressure, 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 For HP 3560 and HP 3561, 1/16" thickness only; for 3535, 1/4" thick-
ness only.
3 ASTM F37B Sealability, milliliters/hour (1/32" thick)
ASTM Fuel A (isooctane):
Gasket load = 1,000 psi (7 N/mm2),
Internal pressure = 9.8 psig (0.7 bar)
4 DIN 3535 Part 4 Gas Permeability, cc/min. (1/16" thick)
Nitrogen: Internal pressure = 580 psig (40 bar),
Gasket load = 4,640 psi (32 N/mm2 )
GYLON® Styles 3500 3504 3510 3530 3540 3545
Color Fawn with Blue with Off-white with Black with White with White with
black brand black brand black brand no brand black brand black brand
Composition PTFE with PTFE with PTFE with PTFE with Microcellular Microcellular
silica glass barium graphite PTFE PTFE
microspheres sulfate
Temperature1 Minimum -450°F -450°F -450°F -450°F -450°F -450°F
(-268°C) (-268°C) (-268°C) (-268°C) (-268°C) (-268°C)
Cont. max. +500°F +500°F +500°F +500°F +500°F +500°F
(+260°C) (+260°C) (+260°C) (+260°C) (+260°C) (+260°C)
Pressure, psig 1,200 800 1,200 1,200 1,200 1,200
Cont. max.1 (bar) (83) (55) (83) (83) (83) (83)
P x T, max.1 1/32", 1/16" 350,000 350,000 350,000 350,000 350,000 350,000
(0.8 mm,1.6 mm) (12,000) (12,000) (12,000) (12,000) (12,000) (12,000)
psig x °F 1/8" 250,000 250,000 250,000 250,000 250,000 250,000
(bar x °C) (3.2 mm) (8,600) (8,600) (8,600) (8,600) (8,600) (8,600)
Sealability
ASTM Fuel A ml/hr 0.22 0.12 0.04 0.02 0.25 0.15
(ASTM F37B)3
Gas Permeability cc/min. < 0.015 < 0.015 < 0.015 < 0.015 < 0.015 < 0.015
(DIN 3535 Part 4)4
Creep Relaxation % 18 40 11 29 10 15
(ASTM F38)
Compressibility Range
(ASTM F36) % 7-12 25-45 4-10 7-17 70-85 60-70
Recovery % >40 >30 >40 >40 >8 >15
(ASTM F36)
Tensile Strength psi 2,000 2,000 2,000 3,000 — —
(ASTM D1708) (N/mm 2) (14) (14) (14) (21)
Flammability Will not support flame
Bacterial Growth Will not support
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).
Typical Physical Properties*
* Values do not constitute specification limits