Vespel® Ferrules
• 100% high-temperature polyimide.
• Stable to 350 °C.
• Durable, leak-tight.
Graphite Ferrules
• Preconditioned to eliminate out-gassing.
• High-purity, high-density graphite.
• Smoother surface and cleaner edges than conventional graphite ferrules.
• Contain no binders that can off-gas or adsorb analytes.
• Stable to 450 °C.
Vespel®/Graphite Ferrules
• 60%/40% Vespel®/graphite blend, offering the best combination of sealing and ease
of workability.
• Seal with minimal torque, reusable, and preferred for vacuum and high-pressure uses.
• Stable to 400 °C.
• Recommended for mass spec transfer lines.
284
GC ACCESSORIES |
COLUMN INSTALLATION
Ferrules
*For micropacked columns.
**For 0.28 mm MXT columns.
Reusable!
Choosing the Right Ferrule
Although graphite and Vespel®/graphite fer-
rules 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 that might off-gas. Vespel®/graphite
ferrules work better for vacuum and high-
pressure applications (e.g., GC/MS) because
they will not fragment or allow oxygen to
permeate into the system, whereas graphite
ferrules will. Because Vespel®/graphite ferrules
are made from a harder material, they might
require retightening after several temperature
cycles. Alumaseal® ferrules are ideal for GC/MS.
They will not crack or fragment and require no
retightening after temperature cycles.
graphite ferrules
graphite ferrules
graphite ferrules
tech
tip
Capillary Ferrules
for
1
/
16
-Inch Compression-Type Fittings
Available in Vespel®, graphite, or Vespel®/graphite.
Ferrule ID
Fits Column ID
qty.
Vespel
Graphite
Vespel/Graphite
0.3mm
10-pk.
22213
20233
20275
0.4mm 0.10/0.15/0.18/0.25/0.28mm 10-pk.
22214
20200
20211
0.4mm 0.10/0.15/0.18/0.25/0.28mm 50-pk.
—
20227
20229
0.5mm
0.32mm
10-pk.
22215
20201
20212
0.5mm
0.32mm
50-pk.
—
20228
20231
0.6mm
0.28mm**
10-pk.
—
—
20232
0.8mm
0.45/0.53mm
10-pk.
22216
20202
20213
0.8mm
0.45/0.53mm
50-pk.
—
20224
20230
1.0mm
0.75mm*
10-pk.
22217
21058
24912
1.2mm
0.75mm*
10-pk.
22218
—
—
—
1.6mm
1.00mm*
10-pk.
—
21060
—
—
Vespel® ferrules
Encapsulated Ferrules
for
1
/
16
-Inch Compression Fittings
• Reusable—will not deform and stick in fittings.
• Less torque needed to seal ferrule.
• Restek’s unique blend of graphite minimizes fragmentation and outgassing.
Ferrule ID
Fits Column ID
qty.
cat.#
price
0.4mm
0.25mm
10-pk.
21036
0.5mm
0.32mm
10-pk.
21037
0.8mm
0.53mm
10-pk.
21038
Compact Ferrules
for Agilent 5890/6890/6850/7890 GCs
Available in graphite or Vespel®/graphite.
Ferrule ID
Fits Column ID
qty.
Graphite
Vespel/Graphite
0.4mm
0.25/0.28mm
10-pk.
20250
20238
0.4mm
0.25/0.28mm
50-pk.
20251
20239
0.5mm
0.32mm
10-pk.
21007
20248
0.5mm
0.32mm
50-pk.
21008
20249
0.8mm
0.45/0.53mm
10-pk.
20252
20263
0.8mm
0.45/0.53mm
50-pk.
20253
20264
1.0mm
0.75mm*
10-pk.
21059
—
—
1.6mm
1.00mm*
10-pk.
21061
—
—
Website :
E-mail :
TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011
