Page 27 - InertexCatalog2010

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2
PRODUCT FEATURES
and
SPECIFICATIONS
(ALL
INERTEXÒ PRODUCTS)
Operating Parameters
Temperature Range -450
o
F to +600
o
F
Pressure Range Full vacuum to 3000 PSI
Chemical Compatibility Fully compatible throughout the pH range of 0 to 14!
Affected only by elemental Fluorine and molten alkali
metals.
Oxygen Service Limits Oxygen index of 94.5% (PRODUCT MUST BE ORDERED
WITHOUT ADHESIVE STRIP) (PTFE will burn in 100%
oxygen atmosphere when ignition source is provided)
FDA Suitable FDA 21CFR 177.1550
Material Properties
A. Specific Gravity: 0.45 - 0.55 for UHF Joint Sealant; 0.75 - 0.95 for SQ-S Gasket Sheet;
compressed to 2.0 - 2.1
B. Modulus of Elasticity: 50,000 PSI at 73°F
C. Matrix Tensile Strength: £ 6800 PSI
D. Coefficient of Friction: 0.2 (comparable to wet ice)
E. Surface Free Energy: 18.5 dynes / cm
2
.
F. Chemical Compatibility: Inert except with elemental fluorine and alkali metals.
G. 0xygen Index: 94.5%
H. Thermal Conductivity: 0.601 BTU-in/hr-ft
2
-°F @ 75°F
I. Heat of combustion: 1434 ± 100 cal/g
J. Specific heat: 0.23 BTU/lb. - °F
K. Autoignition Temp: 939 ± 100 °F
L. Ignition Temp.: Pa = 75 bar 145°C = 12k, Pe = Approx. 105 bar in condensed oxygen.
M. Dissociation Pressure: 5 x 10
-18
mm Hg at 27°C: 5 x 10
-12
mm Hg at 100°C.
N. PTFE is degraded by high energy radiation; however, there are examples of exposure
to 17 megarads of gamma radiation on steel flanges with no loss of seal.
O. Toxicity: NON-TOXIC
P. HEALTH HAZARDS: None under normal use and conditions
Q. WASTE DISPOSAL METHOD: Normal landfill - complies with any local disposal
regulations