Page 77 - GarlockFluidSealing2010

C-17
GYLON® Style 3522
Diaphragm Material
Chemical and temperature resistance
¦Withstands aggressive chemicals and temperatures
up to +500°F (+260°C). Consult Garlock Engineering
regarding your specifc application.
Resilience
¦Up to three times the fex life of conventional PTFE
Conforms to FDA regulations
Benefts
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.
† When approaching maximum pressure and temperature, consult
Garlock Applications Engineering.
** Patent #4,990,296
†† O.D. sizes 70" (1778 mm) and over
* Values do not constitute specifcation limits
Welded GYLON ®
Effective seal
¦Patented** welding process produces large gaskets ††
without dovetailed joints that permit leakage
¦GYLON ® material provides the excellent chemical re-
sistance of PTFE without creep relaxation and cold fow
problems
Versatile
¦Ideal for corrosive applications with extra-large fanges
¦Styles 3500, 3504, and 3510 can be welded using this
unique process
Conforms to FDA regulations
Benefts
WARNING:
Properties/applications shown throughout this brochure are typical. Your specifc applica-
tion 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 respon-
sibility 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® 3522 Skived PTFE
Color Clear, translucent —
Composition PTFE —
Temperature Maximum† +500°F (+260°C) —
Creep Relaxation(ASTM F38) % 35 51
Specifc Gravity (D792) 2.19 2.185
Compressibility (ASTM F36) % Range 20-25 20-25
Recovery (ASTM F36) % >50 >50
Tensile Strength
(ASTM D1708)
X direction psi (N/mm2) 5,000 (35) 4,050 (28)
Y direction psi (N/mm2) 5,100 (36) 3,000 (21)
Ultimate Elongation
(ASTM D1708)
X direction % 500 550
Y direction % 520 450
Gas Permeability
(ASTM D1434V) cc/M2/24 hrs 10,000 35,000
Flammability Will not burn —
Bacterial Growth Will not support —
Comparison of Typical
Physical Properties*
Questions? Call Gasket
Applications Engineering
at 1-800-448-6688.
Gaskets
Garlock
®
Note:
Due to unique dynamics of actuated pumps,
Garlock cannot specify temperature limits
for the Style 3522 materials. In a diaphragm
pump there are variables such as, but not
limited to: geometry, displacement, and pump
speed that greatly affect the diaphragm
performance. Experienced pump manufactur-
ers have confrmed that pumps used in low
and/or elevated service temperatures (40°F
to 200°F) should be de-rated with respect to
speed and pressure.