WARNING:
Properties/applications shown throughout this brochure are typical. Your specifc
application should not be undertaken without independent study and evaluation
for suitability. For specifc 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 feld testing,
customer feld reports and/or in-house testing.
While the utmost care has been used in compiling this brochure, we assume no
responsibility for errors. Specifcations 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 fanges 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/mm
2
),
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/mm
2
)
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
Temperature
1
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 fame
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 specifcation limits