GC Specific - Graphite Ferrules

Ideal for Gas Chromatography (GC)

Glass Packed GC Columns

1/4"OD
6mm OD

SF400G
SF400/M6G

better than Teflon
better than Vespel
will NOT stick to
or break the glass

Capillary Column Sizes

• Glass and Fused Silica Capillary Columns
  ANY Size even DOWN to the real "tiny" ones

• Glass Packed columns ( most are 1/4"OD )

real size

Magnified about 8x

"Short" approx 0.090-in long
Standard approx 0.120-in long

OEM Specific

HP / Agilent 5890/6890
Column ID

Column OD

Graphite Ferrule Cat. #

Standard **

Short **

0.18mm
0.25mm
0.32mm
0.53mm
0.75mm*
1.0mm*
1.2mm
SS or Silcosteel
dual 0.32mm ID Columns

0.3mm
to 0.35mm
0.35 to 0.40mm
0.42 to 0.5mm
0.70 to 0.75mm
to 1.0mm
1.2mm *
1/16*
dual <0.5mm OD Columns

GF100/0.3HP
GF100/0.4HP
GF100/0.4HP
GF100/0.5HP
GF100/0.8HP
GF100/1.0HP
GF100/1.2HP**
GF100HP**
GF100/2x0.5HP #
 

GF0.3HP
GF0.4HP
GF0.4HP
GF0.5HP
GF0.8HP
GF1.0HP
GF1.2HP**
GF100sHP**
GF2x0.5HP #

* eg  Restek Micropacked columns*
# use for dual  0.25/0.32mmID Columns

** the HP requires the appropriate Inlet Seal ID

Graphite "O-Ring"


Splitter Liner
Splitless Liner

6.35mm OD
6.55mm OD

Injector Liner Seals Use in preference to Viton O-rings(280-degC) or Silicone (250-degC) supplied as standard by HP
- for high temperature applications
 > 280C ( to 450C )
GFO6.35-HP ( splitter liners )
GFO6.55-HP ( splitless liners )

* NOTE the GF O-ring Profile is not an "O" but "thin flat double cone" with a parallel ID to mate with the tube
It is a replacement for a rubber O-ring

SIZES

Restek Column ID

Column OD

Ferrule ID
Nominal

ID Actual

To Order

Fused Silica

0.10mm

0.363mm+/-0.012

0.40mm

0.016"

SF100/0.4G

0.18

0.363+/-0.012

0.40

0.016"

SF100/0.4G

0.25

0.363+/-0.012

0.40

0.016"

SF100/0.4G

0.32

0.45+/-0.04

0.50

0.021"

SF100/0.5G

0.53

0.69 +/-0.05

0.75

0.029"

SF100/0.75G *

MXT

0.28

0.53 +/-0.025

0.50

0.021"

SF100/0.5VG

0.53

0.74 +/-0025

0.80

0.031"

SF100/0.8VG *

Dimensions are for
Restek Fused Silica Columns
CHECK you column OD with a micrometer
IF in doubt !

Graphite/Polyimide is very hard and will squash down max of
0.05mm (0.002"  )
Graphite will squash
0.25mm (0.010" easily)

Graphite/Polyimide - Do up finger-tight - then requires 1/2 turn with spanner . Feel is relatively progressive until max pressure with short spanners ( Go by feel until silica in ferrule doesn't slip )
Note : the silica is almost impossible to break inside the ferrule

NEW !  2005 Graphite/Polyimide now in SHORT Version ( similar to Agilent short GFs )
Works perfectly in standard Swagelok 1/16" Nut - Price 25% less use eg Cat# SF0.4VG

 VARIAN GC

GFM5

for 5mm OD Liner Seals

Fisons 8000 Mega Series / GC/MS *

Cat. #

Also TRACE / ThermoQuest

0.10 to 0.18mm ID
0.25mm ID
0.32mm ID
0.53mmID
Double 0.5mmID Hole

Liner Seals
8mm OD (x105mm Length)   Liners

* these are "capture" seals ie the graphite ferrule is pressed into a SS cup

CF0.3-Fis
CF0.4-Fis
CF0.5-Fis
CF0.8-Fis
CF2x0.5-Fis

CFM8-Fis**

** the graphite seal is captured in a SS Outer ring.

ANY Size Made to Order - for ANY GC and to YOUR Specifications
For non-standard sizes a one-off tooling cost of $75 may apply
depending on quantities required

For Quotation use our GF Spec Sheet

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