Vacuum Fittings Feedthroughs - Vacuum Products Canada Inc.

CF Components
CF components are manufactured
according to the requirements outlined
in the introductory chapter. They are
made from selected and corrosion
resistant types of stainless steel. Both
design and production methods are
such, that the components meet the
requirements of UHV applications. All
components are fusion welded from
the inside to prevent fissures and
pocket holes (virtual leaks which cannot
be located by leak detection
methods from the outside). If welding
from the outside cannot be avoided
due to design constraints, the welding
seam penetrates to the inner side, the
side of the vacuum.
Advantages to the User
- Low degassing rates
- High degassing temperature
- Leak rates below
1 x 10 -11 mbar x l x s -1
- Basic dimensions correspond to
those of the components from
other international manufacturers
- Bolts may be inserted from the
side of the body
A carefully implemented cleaning process
and suitable packaging for the
components are essential pre-requisites
for obtaining pressures in the UHV
range within reasonably short pump
down times after assembly (providing
the remainder of the apparatus is clean
too).
For applications in the extreme UHV
range (XHV) the outgassing rate of the
CF flanges and the UHV components
can be reduced by about two orders
of magnitude by a special degassing
process.
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Oerlikon Leybold Vacuum Full Line Catalog