General Purpose Blue Silicone Septa
 
- Suitable for GC analysis
- Up to 150 injections
- Maximum temperature up to 250 C
 
Packaged in Glass Jars - 100 pieces per Jar

CM606GPB-9.5  3 mm Thick, GC Septa, 9.5 mm (3/8") Diameter  $67.70 
CM606GPB-11  3 mm Thick, GC Septa, 11 mm (7/16") Diameter  $69.97
CM606GPB-17  3 mm Thick, GC Septa, 17 mm (21/32") Diameter  $79.05 


  
General Purpose White Low Bleed Septa
 
- Suitable for GC analysis
- Lifetime of over 100 injections
- Maximum temperature up to 250 C
 
Packaged in Glass jars - 100 pieces per Jar

CM606GPW-9.5  3 mm Thick, Milky White Low Bleed GC Septa, 9.5 mm (3/8") Diameter  $67.70 
CM606GPW-11  3 mm Thick, Milky White Low Bleed GC Septa, 11 mm (7/16") Diameter  $69.97
CM606GPW-17  3 mm Thick, Milky White Low Bleed GC Septa, 17 mm (21/32") Diameter  $79.05 

 
 
ThermoRed High Temp Ultra Low Bleed Septa
 
- Suitable for GC and GC/MS applications
- Lowest bleed performance
- Long Life - 450 injections minimum
- Maximum temperature up to 400 C
 
Packaged in Glass Jars - 25 pieces per Jar

CM606550BTO-9  3 mm Thick, Red High Temp Ultra Low Bleed GC Septa, 9 mm Diameter $26.22 
CM606550BTO-9.5  3 mm Thick, Red High Temp Ultra Low Bleed GC Septa, 9.5 mm (3/8") Diameter  $27.68
CM606550BTO-11  3 mm Thick, Red High Temp Ultra Low Bleed GC Septa, 11 mm (7/16")  Diameter  $27.85 
CM606550BTO-17  3 mm Thick, Red High Temp Ultra Low Bleed GC Septa, 17 mm (21/32") Diameter  $29.96 

 
Extremely Low Bleed Septa
 
- Excellent resealing properties
- Extreme low bleed performance
- Easily penetrated by syringe needle
- Maximum temperature up to 350 C
 
Packaged in Glass Jars - 25 pieces per Jar

CM606XLB-9.5  3 mm Thick, Green High Temp/Low Bleed GC Septa, 9.5 mm (3/8") Diameter   $29.47
CM606XLB-11  3 mm Thick, Green High Temp/Low Bleed GC Septa, 11 mm (7/16") Diameter  $29.96
CM606XLB-17  3 mm Thick, Green High Temp/Low Bleed GC Septa, 17 mm (21/32") Diameter  $32.22 


  
HT-X High Performance Septa
 
- Long Life - 200 injections minimum
- Maximum temperature up to 350 C
 
Packaged in Glass Jars - 25 pieces per Jar

CM606HTX-9.5  3 mm Thick, Blue High Temp Low Bleed GC Septa, 9.5 mm (3/8") Diameter  $29.47 
CM606HTX-11  3 mm Thick, Blue High Temp Low Bleed GC Septa, 11 mm (7/16") Diameter  $29.96 
CM606HTX-17  3 mm Thick, Blue High temp Low Bleed GC Septa, 17 mm (21/32") Diameter  $32.22 


  
Three Layer Septa
 
- Excellent sealing properties
- Consists of a layer of red silicone rubber, a layer of soft silicone rubber and a final layer of red silicone rubber
- Maximum temperature up to 300 C
 
Packaged in Glass Jars - 100 pieces per Jar

CM6063L-9.5  3-Layer GC Septa, 9.5 mm (3/8") Diameter  $46.80
CM6063L-11  3-Layer GC Septa, 11 mm (7/16") Diameter  $49.07 
CM6063L-17  3-Layer GC Septa, 17 mm (21/32") Diameter  $58.16 


 
 Four Layer Septa
 
- Excellent sealing properties
- Consists of a layer of red silicone rubber, a layer of soft silicone rubber and a layer of red silicone rubber with 10 mil PTFE facing
- Maximum temperature up to 225 C
 
Packaged in Glass Jars - 100 pieces per Jar
 
CM6064L-9.5  4-Layer GC Septa, 9.5 mm (3/8") Diameter  $65.43
CM6064L-11  4-Layer GC Septa, 11 mm (7/16") Diameter  $67.69 
CM6064L-17  4 Layer GC Septa, 17 mm (21/32") Diameter  $76.78 


 
 MicroSep PTFE Lined Septa
 
- Off-white silicone rubber lined with white PTFE
- Maximum temperature up to 250 C
 
Packaged in Glass Jars - 25 pieces per Jar

CM606MS-9.5  3 mm Thick, White PTFE/Off-White Silicone Septa, 9.5 mm (3/8") Diameter  $20.22 
CM606MS-11  3 mm Thick, White PTFE/Off-White Silicone Septa, 11 mm (7/16") Diameter  $20.87 
CM606MS-17  3 mm Thick, White PTFE/Off-White Silicone Septa, 17 mm (21/32") Diameter  $23.15 

 
 
MicroSep Low Bleed PTFE Lined Septa
 
- Cream silicone rubber lined with yellow PTFE
- Maximum temperature up to 250 C
 
Packaged in Glass Jars - 25 pieces per Jar
​
CM606MSLB-9.5  3 mm Thick, Yellow PTFE/Cream Silicone Septa, 9.5 mm (3/8") Diameter  $21.36
CM606MSLB-11  3 mm Thick, Yellow PTFE/Cream Silicone Septa, 11 mm (7/16") Diameter  $22.00 
CM606MSLB-17  3 mm Thick, Yellow PTFE/Cream Silicone Septa, 17 mm (21/32") Diameter  $24.28 



 Advanced Green Septa
 
- Low Bleed Performance
- Long Life - up to 100 injections
- Maximum temperature up to 300 C
 
Packaged in Glass Jars - 50 pieces per Jar

CM606550GR-11  3 mm Thick, Green General Purpose Septa, 11 mm (7/16") Diameter  $47.61


 
Low Bleed Gray Septa
 
- Low bleed performance
- Good resealing capability
- Long Life - up to 100 injections
- Maximum temperature up to 200 C
 
Packaged in Glass Jars - 24 pieces per Jar

CM606550LB-11G  3 mm Thick, Gray Low Bleed General Purpose Septa, 11 mm (7/16") Diameter  $18.36 


 
Low Bleed Red Septa
 
- Low bleed Performance
- Good resealing capability
- Long Life - up to 100 injections
- Maximum temperature up to 300 C
 
Packaged in Glass Jars - 24 pieces per Jar

CM606550LB-11R ​ 3 mm Thick, Red Low Bleed General Purpose Septa, 11 mm (7/16") Diameter  $25.90 


 
Long Life Yellow Septa
 
- Very low bleed performance
- Excellent adhesion to PTFE substrate
- Ideal for long or overnight runs
- Long Life - up to 200 injections
- Maximum temperature up to 350 C
 
Packaged in Glass Jars - 25 pieces per Jar

CM606550Y-11  3 mm Thick, Long Life Yellow Septa, 11 mm (7/16") Diameter  $33.36 


 

High Temperature Red GC Septa with Guide Hole
 
- Lowest bleed performance
- Long Life - 450 injections minimum
- Maximum temperature up to 400 C
- 50 durometer hardness
 
Packaged in Glass Jars - 50 pieces per Jar

CM606GHT-9.5R  3 mm Thick, Red High Temp GC Septa with Guide Hole, 9.5 mm Diameter   $72.56
CM606GHT-10R  3 mm Thick, Red High Temp GC Septa with Guide Hole, 10 mm Diameter   $72.56
CM606GHT-11R 3 mm Thick, Red High Temp GC Septa with Guide Hole, 11 mm Diameter   $78.41
CM606GHT-17R  3 mm Thick, Red High Temp GC Septa with Guide Hole, 17 mm Diameter   $115.08


 
Ultra Low Bleed Purple GC Septa with Guide Hole
 
- Lowest bleed performance
- Long Life - 450 injections minimum
- Maximum temperature up to 325 C
- 50 durometer hardness
 
Packaged in Glass Jars - 50 pieces per Jar

CM606GHP-9.5P  3 mm Thick, Purple General Purpose GC Septa with Guide Hole, 9.5 mm Diameter  $68.35 
CM606GHP-10P  3 mm Thick, Purple General Purpose GC Septa with Guide Hole, 10 mm Diameter  $68.35
CM606GHP-11P  3 mm Thick, Purple General Purpose GC Septa with Guide Hole, 11 mm Diameter  $68.84
CM606GHP-17P  3 mm Thick, Purple General Purpose GC Septa with Guide Hole, 17 mm Diameter   $100.31


 
Shimadzu Precision Molded Red Plug
 
- Fits Shimadzu GC's
- Long Life
- Maximum temperature up to 400 C
- 50 durometer hardness
 
Packaged in Glass Jars - 50 pieces per Jar

CM606SP-Plug  Shimadzu Molded Red Plug, Ultra Low Bleed, High Temperature  $79.06 

CM Science is a distributor of injection port GC septa.  We offer a variety of different septa with varying injection life, temperatures, sizes and bleed performances.  Please scroll down to find what you need.

CM Science

GC Injection Port Septa