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Upchurch Scientific PCTFE Male Vacutight Union, 61.3 uL, 1/4-28 Flat-Bottom, 1.60 mm Thru-hole, Clear, Single, 100/pk - P-645C

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PCTFE Male Vacutight Union, 61.3 μL, 1/4-28 Flat-Bottom, 0.062” (1.60 mm) Thru-hole, 500 psi (34 bar) - 100 per pack

Fittings not included

Product Number: P-645V

Categories: Connectors, Fluidic Connections, Low Pressure Multiport Connectors, Union Assemblies

The Upchurch Scientific / IDEX Health & Science / Biotech Fluidics low pressure Male Union efficiently connects tubing in low pressure regions of a system where a dependable connection is imperative. We manufactured this union from PCTFE which delivers excellent chemical resistance. It has a 1/4-28 Flat Bottom thread port style and comes in natural color.

Related Products:

  • P-430 - Elbow Assembly PEEK - 1/16" OD
  • P-603 - Standard Union Delrin® White, 1/4-28 Port

VacuTight Fittings:

  • P-842 - VacuTight Fitting for 1/16” OD Tubing, Short - 10-32 Flat-Bottom - 400–800 psi (27–55 bar)
  • P-844 - VacuTight Fitting for 1/16” OD Tubing, Short - 10-32 Flat-Bottom - 400–800 psi (27–55 bar)
  • P-846 - VacuTight Fitting for 1/16” OD Tubing, Long - 10-32 Flat-Bottom - 400–800 psi (27–55 bar)
  • P-930 - VacuTight Fitting for 1/16” OD Tubing - 1/4-28 Flat-Bottom - 400–800 psi (27–55 bar)
  • P-931 - VacuTight Fitting for 1/16” OD Tubing - M6 Flat-Bottom - 400–800 psi (27–55 bar)
  • P-938 - VacuTight Fitting for 1/16” OD Tubing - 1/4-28 Flat-Bottom - 400–800 psi (27–55 bar)
  • P-942 - VacuTight Fitting for 1/8” OD Tubing - 1/4-28 Flat-Bottom - 500–1,000 psi (34–69 bar)
  • P-945 - VacuTight Fitting for 1/8” OD Tubing, Short - M6 Flat-Bottom - 500–1,000 psi (34–69 bar)
  • P-946 - VacuTight Fitting for 1/8” OD Tubing - 1/4-28 Flat-Bottom - 500–1,000 psi (34–69 bar)
  • P-948 - VacuTight Fitting for 1/8” OD Tubing - 1/4-28 Flat-Bottom - 500–1,000 psi (34–69 bar)
  • P-840 - VacuTight Ferrule for 1/16” OD Tubing - M6 or 1/4-28 Flat-Bottom - 400–800 psi (27–55 bar)
  • P-940 - VacuTight Ferrule for 1/8” OD Tubing - M6 or 1/4-28 Flat-Bottom - 500–1,000 psi (34–69 bar)

Available in the Following Configurations:

  • P-645 - PCTFE Male Union - Single
  • P-645C - PCTFE Male Union - 100 per pack

Low Pressure Unions

  • Manufactured from PEEK, ETFE, Delrin®, polypropylene, or PCTFE
  • Available with 1/4-28, M6, or 10-32 flat-bottom threads

These Low Pressure Unions are available in a variety of polymers, providing several lowcost and chemically-resistant options. The union assemblies below include fittings as shown in the table. The unions in the right column do not include fittings, allowing for customizing the fitting selection. In some cases, a union can be configured to connect two different tubing sizes, for example, if 1/4-28 Flangeless fittings for 1/16” and 1/8” OD tubing were selected, they can be used with the P-603 union to connect the two different tubing sizes.

Part No. Description Colour Threads Includes Thru-hole Swept Volume Pressure Rating
PEEK UNION ASSEMBLIES
P-702 PEEK Union for 1/16” OD Tubing Natural 1/4-28 FB (2) XP-235 0.020” (0.50 mm) 0.41 μL 1,000 psi (69 bar)
P-703 PEEK Union for 1/8” OD Tubing Natural 1/4-28 FB (2) XP-235 0.050” (1.25 mm) 2.57 μL 1,000 psi (69 bar)
ETFE UNION ASSEMBLIES
P-630 ETFE True ZDV Union for 1/16” OD Tubing Natural 1/4-28 FB (2) P-200N/P-245 N/A N/A 1,000 psi (69 bar)
P-631 ETFE True ZDV Union for 1/8” OD Tubing Natural 1/4-28 FB (2) P-300N/P-345 N/A N/A 1,000 psi (69 bar)
P-710 ETFE Union for 1/16” OD Tubing Natural 1/4-28 FB (2) XP-245 0.030” (0.75 mm) 0.93 μL 1,000 psi (69 bar)
STANDARD UNIONS
P-603 Delrin True ZDV Standard Union Natural 1/4-28 FB N/A N/A N/A N/A*
P-620 Polypropylene True ZDV Standard Union Natural 1/4-28 FB N/A N/A N/A N/A*
P-623 ETFE True ZDV Standard Union Natural 1/4-28 FB N/A N/A N/A N/A*
METRIC UNIONS
P-602 Delrin Metric Union Black M6 FB N/A 0.020” (0.50 mm) 0.41 μL N/A*
P-622 ETFE Metric Union Blue M6 FB N/A 0.020” (0.50 mm) 0.41 μL N/A*
MALE UNION
P-645 PCTFE Male Union Natural 1/4-28 FB N/A 0.062” (1.60 mm) 61.3 μL 500 psi (34 bar)
VACUTIGHT UNION
P-845-01 PEEK Union for 1/16” OD Tubing Red 10-32 FB N/A 0.020” (0.50 mm) 0.20 μL N/A*

* Pressure Rating depends on Fittings selected. See pressure rating for fittings on appropriate page.
FB = Flat-Bottom


  • Model: P-645C
  • Manufactured by: Upchurch Scientific

Product 1306/2344

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