A & N ULRIC
TM
Flange System
F68
Scientific Instrument Services, Inc.
TM
Phone: 908-788-5550
www.sisweb.com/catalog/08/F68
A & N ULRIC Flange System
A
& N has been a major supplier of vacuum components
to the industry since 1965. As a manufacturer and user
of Conflat
®
flanges, ASA flanges, and ISO flanges over
this extended period of time, they have become acutely aware of
the strengths and weaknesses of each of these systems.
Several years ago they set about to create a flanging system
that would embody the best of each of these systems and , ideal-
ly, to extend their capabilities. After extensive development, proto-
types were sent to various facilities throughout the United States
for intensive and rigorous testing.
ULRIC flanges accommodate either metal or elastomer seal-
ing rings, are sexless and are infinitely rotatable. These flanges
(as seen in the illustration) have protruding metal lips which serve
several purposes. This lip protects the sealing surface of the
flange and also precisely regulates the sealing compression of the
elastomer seal. When these lips butt (metal to metal), the "O" ring
is properly torqued and completely confined by metal on all sides. This condition creates a dynamic sealing action not only on the sides
of the "O" ring but on the O.D. as well. The result of this dynamic seal is that the flange is capable of holding both high-vacuum and high
pressure sealing.
The metal sealing groove is protected in two ways. The protruding lips prevent contact with flat surfaces when components are being
moved, stored or assembled. In addition, the groove is recessed into the metal for additional protection, not exposed as in the case of
external knife edge type flanges which are exceedingly susceptible to damage. The metal seals are manufactured from 304 stainless steel
and aluminum. The seal itself facilitates ease of alignment during the assembly process. An interference fit between the angle of the metal
sealing ring and the angle of the flange sealing grove produces a vacuum tight seal from the same sealing ring depending upon the
amount of torque utilized by the assembler when tightening the flanges.
Because the copper seals are softer than stainless steel, they preserve the integrity of the metal sealing groove, allowing multiple
usage of the flange. We do, however, recommend frequent replacement of the seal. Stainless steel seals are recommended for use in
highly corrosive applications. We also recommend
this seal for cryogenic applications.
The quick clamp style flanges facilitate ease of
assembly and are designed so that standard ISO
clamps can be utilized for elastomer seals. The
stronger A & N clamp with stainless trim is suggested
for use with the metal sealing ring. Where high heat
or exceptional durability is required, the all stainless
clamp should be utilized. This unique all 304 stainless
steel flange sealing system also enables ULRIC to be
used in many non-vacuum applications. Very positive
preliminary feedback from the chemical, cryogenic
and pharmaceutical industries shows promising uses
in these areas as well.
Features
-
Flanges accommodate either metal or elastomer seals
-
Unique design protects both elastomer and metal sealing
surfaces.
-
Quick clamp style flanges available to accommodate up to
2" tubing.
-
Flanges are sexless and infinitely rotatable.
Elastomer Seal
-
Guaranteed leak tight to 1 x 10
-9
std.cc/sec.
-
Guaranteed leak tight n pressures up to 300 psi with
elastomer seals. Note: No over-pressure rings are needed
with elastomer seals as in ISO systems.
-
Standard ISO-KF clamps can be used to seal the elastomer
design only.
-
Elastomer seal design eliminates virtual leak problems, and
a coating of vacuum grease is not needed for guaranteed
leak tight sealing.
Metal Seal
-
Guaranteed leak tight in high temperature, ultra high
vacuum applications to 10
-13
torr. For the first time, and
alternative to the Conflat flange is available along with the
ease of assembly and disassembly offered by the ISO-KF
system.
-
Guaranteed leak tight on pressures up to 300 psi with metal
seal.
-
Metal seal (stainless) can also be used for cryogenic sealing
applications.
ULRIC
TM
Flanges With
Elastomer Seal
ULRIC
TM
Flanges With
Metal Seal
NEW
PRODUCT
!
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