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Dupont 21-490, 491 and 492 Filaments

Dupont Filament

S.I.S. has redesigned the filaments for the Dupont 490 series mass spectrometers. We use ceramic presses instead of very fragile glass presses. The result is a filament that is much stronger, much easier to rebuild, and has a longer life than the Dupont originals. The filaments come complete with rhenium ribbon filament, filament post mounted shield, and silver filament leads. For the repair of these filaments see the Dupont Filament Repair Section.

UOM=EA
Part No. Description ship
wt.
Quantity
In Stock
Price Quantity
to order
DFA Dupont 21-490 and 491 Filament 0.3 0(#)$203.00
DFC Dupont 21-492 Filament 0.3 1$203.00
(#) Standard lead-time for out-of-stock items is approximately two weeks.
shopping cart Ordering information. International (non-US) prices available through your local dealer.
SIS Catalog Cross Reference
Page #Part Numbers
DFA, DFC
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