Ferrules
•
800-356-1688
•
32
•
StandardFerrules—For
1
/
16
-,
1
/
8
-, and
1
/
4
-InchFittings
Alumaseal™Ferrules*
• Nomore ferrule fragments in the transfer line; aluminum construction—will not crackor fragment.
• No retightening required after temperature cycles—excellent forGC/MS.
• Eliminate out-gassing,make leak-tight seals, for less detector noise.
• Unique two-piece designpermanently locks on fused silica tubingwithout causingbreakage.
• Will not stick in fittings, unlikeVespel®or graphite.
• Stable to550°C.
• Usewith any
1
/
16
" compression-type fitting.
*Patent pending.
Ferrule ID
Fits Column ID
qty.
cat.#
price
0.4mm
0.25mm
10-pk.
21472
$43
0.5mm
0.32mm
10-pk.
21473
$43
0.8mm
0.53mm
10-pk.
21474
$43
Two-HoleFerrules—For
1
/
8
-Inchand
1
/
16
-InchCompression-TypeFittings
ReducingFerrules
BlankFerrules—For
1
/
16
-InchFittings
Fitting Size
Ferrule ID
Fits Column ID
qty.
Vespel
®
/Graphite
1
/
16
"
0.4mm
0.25/0.28mm
5-pk.
20241
$36
1
/
16
"
0.5mm
0.32mm
5-pk.
20242
$36
1
/
8
"
0.8mm
0.45/0.53mm
5-pk.
20246
$36
Fitting Size
Ferrule ID
Fits Column ID
qty.
Graphite
Vespel
®
/Graphite
1
/
8
"
0.4mm
0.25mm
5-pk.
20205
$22
20254
$24
1
/
8
"
0.5mm
0.32mm
5-pk.
20205
$22
20255
$24
1
/
8
"
0.8mm
0.53mm
5-pk.
20206
$22
20215
$24
1
/
4
"
0.4mm
0.25mm
5-pk.
20203
$22
—
—
1
/
4
"
0.5mm
0.32mm
5-pk.
20203
$22
20257
$24
1
/
4
"
0.8mm
0.45/0.53mm
5-pk.
20204
$22
20217
$24
Fitting Size
Ferrule ID
qty.
Vespel
®
/Graphite
1
/
16
"
no hole
10-pk.
20240
$24
Fitting Size
Ferrule ID
qty.
Vespel
®
Graphite
Vespel
®
/Graphite
1
/
4
"
3
/
16
"
5-pk.
—
—
—
—
20258
$24
1
/
16
"
1
/
16
"
10-pk.
22210
$36
20207
$30
20218
$36
1
/
8
"
1
/
8
"
10-pk.
22211
$36
20208
$30
20219
$36
1
/
8
"
reduce to
1
/
16
"
10-pk.
—
—
20209
$30
20220
$36
1
/
4
"
1
/
4
"
10-pk.
22212
$36
20210
$30
20221
$36
1
/
4
"
reduce to
1
/
8
"
10-pk.
22219
$36
20225
$30
20222
$36
1
/
4
"
reduce to
1
/
16
"
10-pk.
—
—
20226
$30
20223
$36
tech
tip
Choosing theRight Ferrule
Although graphite andVespel
®
/graphite ferrules each have advantages and disadvantages, the choice of ferrule composition is
largely a personal preference. Graphite ferrules are soft, easy to seal, stable to 450°C, and contain no binders thatmight off-gas.
Vespel
®
/graphite ferruleswork better for vacuum and high-pressure applications (e.g., GC/MS) because theywill not fragment or
allow oxygen to permeate into the system, whereas graphite ferruleswill. BecauseVespel
®
/graphite ferrules aremade from a harder
material, theymight require retightening after several temperature cycles. Alumaseal
™
ferrules are ideal for GC/MS.Theywill not crack
or fragment and require no retightening after temperature cycles.
