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Radolid® Protection Caps
FLANGE INSULATING GASKET KITS
Flanges, the most common trouble area, need to be sealed properly to prevent
leakage and must also be cathodically insulated to prevent stray currents which
cause undo corrosion and eventual breakdown of the metal. Advance Products & Systems
manufactures and maintains a supply of quality products and materials which help
solve most flange sealing problems, therefore preventing subsequent corrosion and
saving the integrity of the pipeline.
Advance Flange Insulation Gasket Kits are manufactured according to ANSI B16.5
specifications up to 600mm. Above 600mm, please provide the specifications of your
flange using our convenient worksheet. Technical assistance is available upon request.
Type D gaskets are specifically designed to fit into the ring groove of
ring-type-joint flanges. They are manufactured of a medium weave, fabric-reinforced
phenolic material and are sized to ANSI specifications available in basic oval as
well as octagonal shape. Also available are BX gaskets with pressure ratings to
Type E is a full-faced gasket with the same outside diameter as the flange and
precision cut bolt holes. This design facilitates proper alignment of the gasket
during installation and foreign material prevented from shorting the flange
insulation. Type E gaskets are available in plain face or Nitrile faced phenolic,
as well as a variety of high temperature materials. Standard thickness of 3.1mm.
Type F gaskets are made to fit the raised face portion of the flange only.
As there are no bolts holes in the F gasket, the inside diameter of the bolt
hole circle is slightly smaller than the outside diameter of the gasket, assuring
an exact, automatic positioning of the gasket. Available in the same materials as
the type E gasket. Standard thickness of 3.1mm.
Gasket Retainer Specifications
|| Max. Operating
|| Absorption %
|| Strength PSI
|| Strength PSI
|| Values VPM
INSULATING SLEEVES AND WASHERS
Insulating sleeves manufactured of high density polyethylene, NEMA grade LE phenolic,
and Mylar are available in a full range of sizes. Also available are one-piece
integral sleeves and washers which are made of Minton, providing superior compression
strength. Integral sleeves are available in sizes through 37.5mm. A variety of high
temperature sleeves are also stock items. With each insulating washer, a 3.1mm thick
S.A.E. electro-plated steel washer is provided to protect the insulating washer from
damage by the nut. Advance flange insulation sets are available in single washer or
double washer kits.
TROJAN SEALING GASKETS
Trojan gaskets are state-of-the-art in near zero leakage static sealing. The elastomer
sealing element is encapsulated in the electrically insulated retainer. The
encapsulation of the sealing element permits only micro-exposure of the seal to
hostile environs of fire, chemicals and corrosive fluids.
Because of the controlled confinement of the elastomer sealing ring within the
available volume of the groove in the retainer, 92% to 94% filled volume, a
consistent controlled-pressure seal can always be obtained without tremendous
bolt loads. Reduced loads allow for reduced flange thickness, smaller bolts and
The cross section of APS’s Trojan Sealing Gasket (A) shows the elastomer sealing
element as it appears before compression between flanges. This compression causes
the seal to effectively fill the void of the groove and encapsulate, permitting
only micro exposure of the actual seal to hostile elements either from within or
QUAD SEAL TROJAN
Four seals on the new Quad-Seal Trojan further insures the integrity of the sealing
capability of an already-proven reliable gasket. For areas where absolute zero
leakage is a must, the Quad-Seal Trojan works twice as hard.
ADVANTAGES OF THE TROJAN
Can be utilized with mismatched flanges
Can be utilized with misaligned flanges
Can be used in place of RTJ or BX rings
Little initial torque required
No re-torquing required
Sealing ring cannot be left out
Seal design tested for high pressures
Limited area of seal exposed (long fire life)
Compensate for pressure fluctuations, compression
changes, vibrations, temperature, variations, etc.
Greatly reduces human error during installation
Large selection of materials available
Three to four times the dielectric strength necessary
Low installation and maintenance costs
Gaskets through 3,6 meters
HIGH TEMPERATURE PRODUCTS
GASKETS: NEMA grade G7 and G10, Durabla, Durlon, Lydall, JMRD81
SLEEVES: Nomex, NEMA grade G7, G10, Durabla, Durlon
WASHERS: NEMA grade G7, G10, Durabla, Durlon
Other temperature materials are available upon request. It is recommended that
the factory be contacted to discuss technical data on the above referenced products.
Advance Products and Systems, Inc. is well equipped to make those special insulation
pads and gaskets sometimes required for odd shaped connections. We can manufacture
any configuration or design needed. These applications include special closures,
vaults, steel boxes, special connectors, utility and light poles. If it needs to be
sealed…we can be of service.
Each Advance flange insulation gasket kit is packaged individually in durable
corrugated boxes. Insulating sleeves and washers are packaged separately and
are cushioned within the box to protect them from damage during shipment.
Each set is clearly tagged with flange size, pressure rating, type of insulating
sleeve and whether it is a single washer or double washer set. A recommended bolt
tightening sequence sheet is provided with each kit.