VacuTight Fittings and Connectors

For Flat-Bottom Ports

  • For 1/16" and 1/8" OD Tubing
  • 10-32, 1/4-28 and M6 Threads
  • Improve Transfer Volume Consistency
Upchurch Scientific® VacuTight Fittings are designed to provide airtight, dependable connections under vacuum and low pressure conditions. Many of the VacuTight Nuts have streamlined profiles for use in systems requiring a large number of connections in a small area. Furthermore, the VacuTight Ferrule's small size ensures sufficient nut/thread engagement, even in shallow ports. These features make VacuTight Fittings ideal for combichem, high throughput screening, clinical diagnostic and other automated liquid handling applications.

VacuTight Fittings are available for flat-bottom 10-32, 1/4-28 and M6 threaded ports. The configuration of the VacuTight flat-bottom ferrules prevents over compression and tubing ID reduction that can occur with many coned fittings. The result is more consistent aspirating and dispensing volumes across all system connections.

The 10-32 VacuTight Fittings are for use with 1/16" OD tubing. The 1/4-28 and M6 fittings are available for use with both 1/16" and 1/8" OD tubing. All VacuTight Nuts must be used exclusively with VacuTight Ferrules.

VacuTight Nuts with hex heads can be tightened with a standard 1/4" wrench. All VacuTight Nuts with knurls (finger grip ridges) can be tightened finger tight. Additionally, some of the standard head and headless nuts can be tightened with our Extender Tools. We recommend tool tightening no more than a 1/2 turn past finger tight.

Use any of the 10-32 fittings on this page to make an inline connection with our VacuTight Union. This product is designed for use with 1/16" OD tubing. Or, use your choice of 1/4-28 or M6 VacuTight Fittings with the appropriate union to make an inline connection with 1/16" or 1/8" OD tubing.

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Item #

Item Name

Head Style

Color

Material

Thread Size

List Price

P-840

VacuTight Ferrule Tefzel Red

N/A

Red

ETFE

N/A

$1.20
P-940

VacuTight Ferrule 1/8in

N/A

Red

ETFE

N/A

$1.23
P-842X

VacuTight Nut for 1/16" OD Tubing

Short Hex Head Nut

Red

PEEK

11963

$44.39
P-844X

VacuTight Nut for 1/16" OD Tubing

Short Headless Nut

Red

PEEK

11963

$44.39
P-846

VacuTight Headless Long

Long Headless Nut

Red

PEEK

11963

$4.57
P-847

VacuTight Hex Long

Long Hex Head Nut

Red

PEEK

11963

$4.43
P-848

VacuTight Fathead

Long Knurl/Hex Fathead Nut

Red

PEEK

11963

$4.51
P-930

VacuTight Fttg 1/4-28 - 1/16

Standard Head Nut

Red

Delrin

46756

$4.69
P-931X

VacuTight Nut for 1/16" OD Tubing

Standard Head Nut

Red

Delrin

M6

$43.06
P-932X

VacuTight Nut for 1/16" OD Tubing

Short Standard Head Nut

Red

Delrin

46756

$43.06
P-933X

VacuTight Nut for 1/16" OD Tubing

Short Standard Head Nut

Red

Delrin

M6

$44.56
P-934

VcTgt Ftg Headless 1/4-28 1/16

Standard Length Headless Nut

Red

Delrin

46756

$4.69
P-935X

VacuTight Nut for 1/16" OD Tubing

Standard Length Headless Nut

Red

Delrin

M6

$43.97
P-938

VacTht Fttg 1/4-28 - 1/16 PEEK

Standard Length Head Nut

Natural

PEEK

46756

$7.86
P-942

VacuTight Fttg 1/4-28 - 1/8

Standard Length Head Nut

Red

Delrin

46756

$4.67
P-943X

VacuTight Nut for 1/8" OD Tubing

Standard Length Head Nut

Red

Delrin

M6

$43.06
P-944

VacTht Fttg 1/4-28 - 1/8 Short

Short Standard Head Nut

Red

Delrin

46756

$4.69
P-945

VacuTight Fttg M6 - 1/8 Short

Short Standard Head Nut

Red

Delrin

M6

$6.65
P-946

VcTgt Fttg Headless 1/4-28 1/8

Standard Length Headless Nut

Red

Delrin

46756

$4.59
P-947X

VacuTight Nut for 1/8" OD Tubing

Standard Length Headless Nut

Red

Delrin

M6

$44.56
P-948

VacTht Fttg 1/4-28 - 1/8 PEEK

Standard Length Head Nut

Natural

PEEK

46756

$4.69