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EPTFE Gasket Material
EPTFE Gasketing
| EPTFE (Expanded PTFE) is a Universal sheet
EPTFE gasket material for most services. Seals
rough and irregular surfaces. Made from biaxial oriented expanded PTFE sheeting
that is laminated to the required thickness. Seals of up to 3000+psi can be achieved
depending on the flange type & design and type of media being sealed. Chemically
resistant over the Q-14 pH range. Specific gravity: 4 to 6. Suitable for
temperatures to 600F. |
Expanded
PTFE Sheeting
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CONSTRUCTION
Our EPTFE gasket material is manufactured by expanding 100%
virgin PTFE using a proprietary process that produces a uniform and
highly fibrillated microstructure with equal tensile strength in all
directions. The resulting product exhibits characteristics
significantly different than conventional PTFE sheet. EPTFE
is much softer and more flexible than regular PTFE sheet gasketing and thus
conforms easily to irregular and rough surfaces. In addition, the
gasket material is easier to compress and minimizes creep and cold flow.
APPLICATION / SERVICE
Our EPTFE is an all purpose gasket material that can
replace all other types of PTFE sheet. It will seal all aggressive
chemicals over the entire 0-14 pH range except for molten alkali
metals and elemental fluorine. Made from 100% virgin PTFE, Our EPTFE gasket
material not only resists chemical attack, but it will
not contaminate or discolor end products. These industries currently
use expanded PTFE gasket material.:
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Distilleries
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Petrochemical
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Food and Beverage
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Pharmaceutical
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General Chemical
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Power generation
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Iron and Steel Manufacturing
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Pulp and paper
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Marine
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SERVICE LIMITS |
| Temperature Limits: |
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-450°F (-268°C) |
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600°F (315°C) |
| pH: |
0-14 (except molten alkali metals and elemental fluorine) |
| ASTM Line Call Out |
ASTM F 104 |
| Color |
White |
| Available Sheet Sizes |
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1/32”, 1/16”, 3/32”, 1/8”, 3/16”, 1/4” |
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60” x 60” |
| TYPICAL PHYSICAL PROPERTIES EPTFE |
ASTM
TEST METHOD |
PHYSICAL PROPERTIES |
VALUES |
| F 37 |
Sealability
ASTM Fuel A (isoctane):
Gasket load, 500 psi (3.5 N/mm2)
Internal Pressure, 9.8 psi (.7 bar)
Nitrogen:
Gasket Load, 500 psi (20.7N/mm2)
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0.0 ml/hr
.16 ml/hr
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| F 36 |
Compressibility |
68% |
| F 36 |
Recovery |
12% |
| F 38 |
Creep Relaxation |
32% at 212°F
16% at 73°F |
| F 495 |
Ignition Loss |
30% |
| F 146 |
Weight Incease After
Five Hour Immersion
ASTM Oil #1 @ +300°F (+150°C)
ASTM Fuel IRM 903 @ + 300°F (+150°C)
ASTM Fuel A @ + 70-85°F (+21-29°C)
ASTM Fuel B @ + 70-85°F (+21-29°C)
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| F 146 |
Thickness Incease After
Five Hour Immersion
ASTM Oil #1 @ +300°F (+150°C)
ASTM Fuel IRM 903 @ + 300°F (+150°C)
ASTM Fuel A @ + 70-85°F (+21-29°C)
ASTM Fuel B @ + 70-85°F (+21-29°C)
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| F 152 |
Tensile Strength Across Grain |
1/16" thick - 1600 psi
(11 N/mm2)
1/16" thick - 1600 psi
(11 N/mm2) |
DIN 3535
Part 4 |
Gas Permeability
Nitrogen:
Internal pressure: 580 psi (40 bar)
Gasket Load: 4640 psi (32 N/mm2)
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Density: |
53 lb/ft3
(.85 gm/cc) |
| Properties and application
parameters shown are typical and are presented in good faith but no
warranty is expressed or implied. This edition supersedes all
previous issues and all data is subject to change without notice.
11/96 |
Available in 1/32", 1/16",
1/8", and 1/4"
Expanded PTFE is also
available on a roll as
Joint Sealant.
Call American Seal
& Packing for your EPTFE gasket material requirements at (714) 593-9780
today!
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