Labware

Serrated & Non-serrated Natural and Silicone Rubber Septa & Sleeve Stoppers

We offer a wide range of serrated and non-serrated natural rubber and silicone rubber septa and sleeve stoppers for use as temporary closures for glassware joints and tubes, bottles, NMR tubes, ampules, and cannulation techniques in air-sensitive chemistry. After piercing the septum with a non-coring needle, the rubber closes the puncture, providing an air and moisture-tight seal to protect the contents of the vessel or container from the atmosphere.

Use the information in this guide to choose the best septum for your application. Click the product number links to see current price and stock availability (you must be registered and logged in to our Web site to obtain all this information).


SEPTA COMPARISON TABLE

 

Precision Seal Septa Image 

Suba•Seal Septa Image 

Natrual Rubber Septa Image 

  Precision Seal Septa Suba-Seal Septa Natural Rubber Septa
(Sleeve Stopper)
Applications For use with organic solvents, pressure applications, and cannulation techniques in air-sensitive chemistry; has medium density, low-extractables rubber formulation, precision fit plug provides a superior seal within glassware joints and tubes. For general-purpose applications with mild organic solvents and aqueous solutions, low-density rubber, serrated plug provides a superior seal within bottles and tubes, available in silicone rubber for high-temperature use, autoclavable. Wide color range. For general-purpose applications with mild organic solvents and aqueous solutions, low-density rubber, offers dimensional alternatives to above septa.
Rubber Type Natural Natural & Silicone Natural
Color White and Red White, Red, Green, Gray and Blue White and Red
Rubber Finish Flat-resists movement once seated Natural-smooth, Silione-flat Smooth-slippery when wet
Rubber Density (Relative) Medium Low Low
Extractables (Relative) Low Medium Medium
C of A Yes No No
Lot Controlled Yes No No
Packaging Spec. White room conditions None None
Plug Design Long length, precision tapered Long length, straight, serrated Short/Med length, straight to slight taper
Plug Style non-serrated serrated non-serrated
Mode of Seal Compression, seals within joint or tube Compression, seals within joint & on sleeve Compression, seals top of joint & on sleeve
Sleeve Long length, heavy-wall, resists deterioration; oversized on larger septa for safe turnover; Anchors septum to joint with Wrap-It Tie*
Wrap-It Tie required for pressure applications and cannulation.
Long length, medium wall Anchors and seals septum to joint;
Wrap-It Tie* required for pressure applications and cannulation.
Medium length and wall; Anchors and seals septum to joint;
Wrap-It Tie* required for pressure applications and cannulation.
Resealability (puncture) Excellent Excellent Excellent
Puncture target area Large Medium Medium
Temperature range, deg C 85 Natural-85, Silicone-200 85
Autoclavable No Natural-No, Silicone-Yes No
Resistance to Pop-off Excellent-requires Wrap-It Tie on glass joints Good with Wrap-It Tie on glass joints Good with Wrap-It Tie on glass joints
Resistance to push-through Excellent-tapered plug tightens in joint with pressure Good-slides through with pressure Fair-slides through with pressure
*Wrap-It Tie: a one-piece, self-locking, nylon closing tie that is required for use with all rubber septa to anchor to glass joints for pressure and cannulation applications. See Septa Accessories for Wrap-It Ties and other accessories. 

More information on Suba-Seal Septa Top of Page
More information on Precision Seal Septa  


 

RUBBER SEPTA DIMENSIONAL SPECIFICATIONS

 Septa Schematic drawing  
 NOTE: Dimensions are expressed in mm and are approximate  

  White Red  
Use Septa Type Cat. No. Cat. No. Top o.d. Bottom o.d. Plug Length Sleeve Length
5mm NMR tubes Precision Seal Z553891 Z554014 8.00 3.80 NA NA
5mm NMR tubes Natural rubber Z565652 Z565644 6.30 3.90 3.80 7.00
 
7mm o.d. glass tubing Precision Seal Z553905 Z554022 6.80 5.00 8.00 8.00
7mm o.d. glass tubing Natural rubber Z565679 Z565660 7.10 4.30 7.00 9.00
 
8mm o.d. glass tubing Precision Seal Z553913 Z554030 8.00 5.17 8.00 9.00
8-9mm o.d. glass tubing Natural rubber Z565695 Z565687 9.10 5.30 8.00 10.80
 
10mm o.d. glass tubing Precision Seal Z553921 Z554049 9.00 6.25 10.00 10.00
9-10mm o.d. glass tubing Natural rubber Z565717 Z565709 11.10 6.60 7.60 11.60
 
13mm i.d. tubing Precision Seal Z553948 Z554057 16.00 13.00 12.00 12.00
13mm i.d. tubing Natural rubber Z565733 Z565725 17.40 13.30 NA NA
 
10/30 Joints Precision Seal Z553956 Z554065 16.00 8.80 16.00 16.00
10/30 Joints Natural rubber Z564680 Z564672 16.70 10.70 9.00 14.00
10/30 Joints Suba-Seal Z167258 Z124567 13.90 10.20 9.40 11.20
Use with small tubes
 
14/20 Joints Precision Seal Z553964 Z554073 20.00 14.00 16.00 17.00
14/20 Joints Natural rubber Z564702 Z564699 18.00 14.00 10.00 16.90
14/20 Joints Suba-Seal Z167282 Z124591 18.90 14.20 12.60 14.00
Use with narrow-mouth bottles: 2, 4, and 8 oz
 
15/25 Joints Precision Seal Z564656 Z564648 22 15.5 23 20
15/25 Joints Natural rubber Z564729 Z564710 24.60 15.70 13.00 18.50
Use with narrow-mouth bottles: 10, 32, 40 oz, & 125 mL, and 1 L Sure/Seal bottles
 
19/22 Joints Precision Seal Z553972 Z554081 25.00 18.90 20.00 20.00
19/22 Joints Suba-Seal Z167304 Z124621 23.90 19.70 16.20 19.10
 
24/40 Joints Precision Seal Z553980 Z554103 32.20 23.40 25.00 25.00
24/40 Joints Natural rubber Z564745 Z564737 28.70 23.70 12.70 21.90
24/40 Joints Suba-Seal Z167320 Z124656 27.00 23.55 20.50 22.70
Use with narrow-mouth bottles: 64, 80 oz, and 1 gal jugs
 
29/42 Joints Precision Seal Z553999 Z554111 34.00 30.00 25.00 25.00
29/42 Joints Suba-Seal Z167355 Z124680 31.60 28.10 20.40 28.00
             

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