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Four neck flask top that has a flat ground flange and can be used with cylindrical and spherical flasks with the same flange I.D.

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4042 Reaction Flask Top, Four Neck - Manufactured by NDS Technologies, Inc.

Reaction Flask Top, Four Neck
List Price $291.85
4042 Reaction Flask Top, Four Neck - Manufactured by NDS Technologies, Inc.

Reaction Flask Top, Four Neck
List Price $382.87
4042 Reaction Flask Top, Four Neck - Manufactured by NDS Technologies, Inc.

Reaction Flask Top, Four Neck
List Price $395.43
Product Name N/A Reaction Flask Top, Four Neck
Flange Inner Diameter N/A 2 in N/A 4 in N/A 4 in
Center Neck Joint N/A 19/22 N/A 24/40 N/A 45/50
Side Joint N/A 14/20 N/A 24/40 N/A 24/40
Thermometer Joint Size N/A 10/18 N/A 10/30 N/A 10/30
Pkg. Qty. N/A 1