348
Fundamentals of Corrosion
Test witnessing indicates that it shrinks in a short time and does
not retain its insulating properties.
11.3.2.3 Comparison of Jacketing
This section presents a comparison of the uses, physical characteristics, limitations, etc., of the following types of protective jacketing systems:
FK
Aluminum foil bonded to kraft paper and reinforced with
fiberglass fabric
FK-SSL Same as above with pressure-sensitive sealing closure system
(self-sealing tape)
TJ
Fiberglass coated fabric with Hypalon rubber fully secured and
laminated to a Tedlar facing
TJ-VB
Above jacket with a vapor barrier of aluminized mylar
laminated to the inner surface
MJ
Metal jacketing
MJ-AL Metal jacket-aluminum
MJ-SS
Metal jacket-stainless steel
PVC
Fiberglass fabric coated with Hypalon rubber and laminated to
the PVC
MAP
Mastic asphaltic
LTM
Low-temperature mastic (nonasphaltic)
1. FK and FK-SSL: aluminum foil bonded to kraft paper:
FK is suitable for jacketing on indoor preformed piping and rigid
board insulation on pipe and equipment. It can be used outdoors
only if another weatherproof jacket is applied over it.
FK is resistant to mild acid and alkali.
FK jacket service temperature limit is between –65 and 150ºF. It
should not be used in areas subject to mechanical or physical abuse.
Its permeability rating at 0.02 is good.
2. TJ and TJ-VB: fiberglass fabric with Hypalon rubber and Tedlar facing:
TJ is suitable for jacketing on indoor and outdoor preformed piping and rigid board insulation on pipe and equipment. It is also
unaffected by acids, bases, and most solvents, including hydrocarbons and chlorinated solvents.
TJ jacket service temperature is between −55 and 250°F. This fiberglass fabric is flexible and will not crack or split. It does not show
dents or wrinkles. Its low permeability (0.02 perms) renders it suitable for use in wet environments. It is washable.
TJ resists ozone, oxygen, sunlight, and erosion.
Fundamentals of Corrosion
Test witnessing indicates that it shrinks in a short time and does
not retain its insulating properties.
11.3.2.3 Comparison of Jacketing
This section presents a comparison of the uses, physical characteristics, limitations, etc., of the following types of protective jacketing systems:
FK
Aluminum foil bonded to kraft paper and reinforced with
fiberglass fabric
FK-SSL Same as above with pressure-sensitive sealing closure system
(self-sealing tape)
TJ
Fiberglass coated fabric with Hypalon rubber fully secured and
laminated to a Tedlar facing
TJ-VB
Above jacket with a vapor barrier of aluminized mylar
laminated to the inner surface
MJ
Metal jacketing
MJ-AL Metal jacket-aluminum
MJ-SS
Metal jacket-stainless steel
PVC
Fiberglass fabric coated with Hypalon rubber and laminated to
the PVC
MAP
Mastic asphaltic
LTM
Low-temperature mastic (nonasphaltic)
1. FK and FK-SSL: aluminum foil bonded to kraft paper:
FK is suitable for jacketing on indoor preformed piping and rigid
board insulation on pipe and equipment. It can be used outdoors
only if another weatherproof jacket is applied over it.
FK is resistant to mild acid and alkali.
FK jacket service temperature limit is between –65 and 150ºF. It
should not be used in areas subject to mechanical or physical abuse.
Its permeability rating at 0.02 is good.
2. TJ and TJ-VB: fiberglass fabric with Hypalon rubber and Tedlar facing:
TJ is suitable for jacketing on indoor and outdoor preformed piping and rigid board insulation on pipe and equipment. It is also
unaffected by acids, bases, and most solvents, including hydrocarbons and chlorinated solvents.
TJ jacket service temperature is between −55 and 250°F. This fiberglass fabric is flexible and will not crack or split. It does not show
dents or wrinkles. Its low permeability (0.02 perms) renders it suitable for use in wet environments. It is washable.
TJ resists ozone, oxygen, sunlight, and erosion.