25
Replacement Inlet Seals
• Special grade of stainless steel that is softer and deformsmore easily, ensuring a com-
pletely leak-free seal.
• Increases column lifetime because oxygen cannot permeate into the carrier gas.
• Reduced noise benefits high-sensitivity detectors (e.g., ECDs,MSDs).
• Silcosteel
®
seal offers the inertness of glass.
• All seals includewashers.
Replacement Inlet Seals for Agilent 5890/6890/6850 Split/Splitless InjectionPorts
The inlet seal at the base of theAgilent 5890/6890GC injection port contacts the sample
and must be changed frequently to prevent adsorption of active compounds. In addition,
septum fragments and sample residue accumulate on the disk surface, requiring disk
replacement.
The inlet seal design increases column lifetime because oxygen cannot permeate into the
carrier gas. Detector noise also is reduced with high-sensitivity detectors (e.g., ECDs or
MSDs). To reduce breakdown and adsorption of active compounds, use the gold-plated or
Silcosteel
®
seals. The gold surface offers better inertness than standard stainless steel, and
the Silcosteel
®
treatment offers inertness similar to that of fused silica capillary columns.
Single-Column Installation,
Opening Size 0.8mm ID*
0.25/0.32mm IDDual-Column
Installation, Opening Size 1.2mm ID
0.53mm IDDual-Column Installation
Opening Size (
1
/
16
-inch hole)
2-pk.
10-pk.
2-pk.
10-pk.
2-pk.
10-pk.
Stainless Steel Inlet Seal
21315
21316
20390
20391
20392
20393
Gold-Plated Inlet Seal
21317
21318
21305
21306
—
—
Silcosteel
®
Inlet Seal
21319
21320
21307
21308
—
—
Replacement Inlet Cross-Disk Seal for Agilent GCs
• Ideal for high-flow split applications onAgilent 5890GCs.
• All seals includewashers.
(Similar toAgilent part # 5182-9652.)
0.8mm IDCross-Disk Inlet Seal for Agilent GCs
2-pk.
10-pk.
Gold-Plated
20477
20476
Silcosteel
®
20475
20474
1.2mm IDCross-Disk Inlet Seal for Agilent GCs
2-pk.
10-pk.
Gold-Plated
21009
21010
Silcosteel
®
21011
21012
*0.8mm ID stainless steel inlet seal is equivalent toAgilent part #18740-20880,
0.8mm ID gold-plated inlet seal is equivalent toAgilent part #18740-20885.
