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22731

Supelco

SS-174 PTFE-Faced Septa

diam. 11 mm ( 7/16 in.)

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About This Item

UNSPSC Code:
41115718
Pricing and availability is not currently available.

material

off-white silicone body (123 mil thick)
yellow PTFE face (2 mil thick)

packaging

pkg of 100 ea

diam.

11 mm ( 7/16 in.)

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226472265422656
Supelco

22731

SS-174 PTFE-Faced Septa

SS-174 PTFE-Faced Septa diam. 10 mm ( 13/32 in.)

22647

SS-174 PTFE-Faced Septa

SS-174 PTFE-Faced Septa diam. 6 mm ( 1/4 in.)

22654

SS-174 PTFE-Faced Septa

SS-174 PTFE-Faced Septa diam. 9.5 mm ( 3/8 in.), pkg of 100 ea

22656

SS-174 PTFE-Faced Septa

material

off-white silicone body (123 mil thick), yellow PTFE face (2 mil thick)

material

off-white silicone body (123 mil thick), yellow PTFE face (2 mil thick)

material

off-white silicone body (123 mil thick), yellow PTFE face (2 mil thick)

material

off-white silicone body (123 mil thick), yellow PTFE face (2 mil thick)

packaging

pkg of 100 ea

packaging

pkg of 100 ea

packaging

pkg of 100 ea

packaging

pkg of 100 ea

diam.

11 mm ( 7/16 in.)

diam.

10 mm ( 13/32 in.)

diam.

6 mm ( 1/4 in.)

diam.

9.5 mm ( 3/8 in.)

General description

PTFE-faced septa are designed for applications where greater inertness is required. The off-white silicone rubber body (123 mil thick) provides plenty of support for the yellow PTFE face (2 mil thick). After the PTFE is ruptured during injection, some bleeding may occur. Because this bleed increases as more of the rubber is exposed, we recommend using a needle guide to reduce the size of the punctured area. For use with 200 °C to 300 °C inlet temperatures.
PTFE-fused septa are suitable to overcome the degradation due to prolonged high temperatures which occurs in silicone rubber septa. The degradation results in baseline drift and additional peaks. It is generally fixed with the PTFE face towards the column packing.[1]

Application

Glass vials equipped with stir bars may be sealed with PTFE faced silicone septa for solvent drop microextraction analysis of water samples.[2]

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