Liquid Nitrogen Dewar Caps & Necktube Cores

Replacement Cap for 4 Liter Liquid Nitrogen Dewar
Size 4 L Cap
Item10415C-AB
AvailabilityIn Stock
$31.75
Necktube Core for 5 liter Liquid Nitrogen Dewar
Size 5 L Necktube
Item10416N-AB
AvailabilityContact for Availability
$69.38
Necktube Core for 10 liter Liquid Nitrogen Dewar
Size 10 L Necktube
Item10426N-AB
AvailabilityIn Stock
$69.38
Necktube Core for 25 liter Liquid Nitrogen Dewar
Size 25 L Necktube
Item10418N-AB
AvailabilityIn Stock
$79.97
Necktube Core for 35 and 50 Liter Liquid Nitrogen Dewars
Size 35 / 50 L NT
Item10419-20N-AB
AvailabilityIn Stock
$79.97

Replace your broken or lost neck tube core. The dewars (except for the 4 liter size) come with a standard lid, also called the "neck tube core". It is both a mechanical cover for the opening and an insulating cover for the top of the dewar, but it is loose enough for the nitrogen to be able to boil away without pressure buildup. The small 4 liter dewar comes with what is called a "cap". So it is not necessary to purchase an additional one. However, often times customers prefer to order spare neck tube cores or caps because they modify them so that different kinds of samples can be suspended into the dewar and kept at cryo temperatures.

SPI# Neckcore

Fits SPI# Dewar

Core Diameter (in.)

Core Length Neck (in.)

10416N-AB

10416-AB

5.5

1.85

10426N-AB

10426-AB

1.93

5.5

10418N-AB

10418-AB

2.46

5

10419N-AB

10419-AB
10420-AB

2.45

8

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