CAPS, CLOSURES, SEPTA
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PTFE Stoppers / Polypropylene Stoppers / Septa
Key-Head Color-Coded Medium Length PTFE Stopper Stoppers are used with laboratory glassware such as flasks and separatory funnels.
White FEP/Silicone Septa Designed for use with headspace autosamplers for sealing sample vials used in operating temperature ranges of -60 to 200 °C.
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PTFE has excellent chemical resistance and resists freezing in ground glass joints Remove the colored polyethylene handle from the PTFE stopper before cleaning or exposing to temperatures above 80 °C Stoppers of sizes 9 through 22 are solid, and sizes 32 through 38 are hollow
• • •
For aluminum seal finishes Clear FEP is 0.003” thick White silicone is 0.120” thick
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Fits Cap Size (mm)
•
Part Number
Color
Case Qty
N73831A-20
20
White
1000
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Designed from ASTM Specification E675
Standard Taper Stopper Size
Part Number
Color
Case Qty
41901R-8 41901R-9 41901R-13 41901R-16 41901R-19 41901R-22 41901R-27 41901R-32 41901R-27 41901R-38
8 9
Gray Black
6 6 6 6 6 6 6 6 6 6
13 16 19 22 27 32 38 38
Orange
PTFE-Faced Red Rubber Septa • Low cost • Excellent resealability •
Blue
Green Yellow
Red Grey
Highly chemical-resistant PTFE facing maintains integrity of contents
Black Black
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Resists coring
Fits Cap Size (mm)
Thickness - PTFE (inches)
Part Number
Case Qty
N73812-13 N73816T-13 73816-15 73816-18 73816-20 N73832-20 N73832A-20 N73834T-20
13 13 15 18 20 20 20 20 24
0.005 0.002 0.002 0.002 0.002
1,000 1,000
144 144 144 100
Linear High Density Polyethylene Stopper Polyethylene stoppers may be used as replacement parts for items that are ground to Standard Taper stopper dimensions.
0.25
1,000
100 144
73816-24
0.002
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These yellow and blue stoppers have a closed bottom The enlarged flange is designed to protect the neck if the glass object is tipped over
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Part Number
Stopper Size
Case Qty
Red PTFE-Faced Silicone Rubber Septa • Highly chemically resistant PTFE-faced silicone rubber maintains integrity of contents • Excellent compressibility and resealability • Withstands multiple injections • Resists coring
28160R-9 28160R-13 28160R-16 28160R-19 28160R-22 28160R-27
9
6 6 6 6 6 6
13 16 19 22 27
Fits Cap Size (mm)
Thickness - Silicon Rubber (inches)
Part Number
Case Qty
N73818B-13
13
0.07
1,000
Polyethylene Stoppers Low-cost polyethylene stoppers are an alternative to standard glass and PTFE stoppers.
Black Rubber Septa • Black rubber septa
• •
Leak-proof, air-tight seals Wide top flange for ease of use
Part Number 774240-0014 774240-0019 774240-0024 774240-0029
Standard Taper Size 14/10, 14/20, 14/35
Case Qty
100 100 100 100
Fits Cap Size (mm)
Part Number
Color
Case Qty
19/22 ,19/38 24/25 ,24/40 29/26, 29/42
N73823A-20
20
Black
1,000
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