Flat-Bottom Fittings

Flat-Bottom Fittings

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Our Flat-Bottom Fittings couple convenience with performance, with options to effectively secure tubing of multiple outer diameters into traditional, flat-bottom receiving ports. Most of our Flat-Bottom Fittings feature the use of an external compression ferrule, which grips the outer wall of the flow path tubing while simultaneously creating a seal against the bottom surface of the receiving port. Most of the ferrules are manufactured from Tefzel™ (ETFE) for excellent compatibility. Numerous options exist, allowing the connection of tubing outer diameters ranging from capillary sizes through 5/16”.

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Select the right product for your needs. Filter by product category in the left-hand column. If you know the product specifications for your part, continue to narrow down your search results by selecting from the list of product attributes.

Part # Product Name
P-401 Flanged Fitting for 1/16" OD - Black
P-400 Super Flangeless™ Nut PFA for 1/8" OD
P-387 Super Flangeless™ Nut PPS, Headless, 1/4-28 Flat-Bottom, for 1/8" OD - Natural
P-381 Super Flangeless™ Nut PPS, 1/4-28 Flat-Bottom, For 1/8" OD - Natural
P-366 Super Flangeless™ Ferrule PEEK, 1/4-28 Flat-Bottom, for 2.5mm OD Natural - Single
P-363R Flangeless Ferrule M6 or 1/4-28 Flat-Bottom, 2.0mm Tefzel™ (ETFE) - Red
P-362 Metric Short Headless Flangeless Nut M6 Flat-Bottom, for 2.5mm OD
P-360X Super Flangeless™ Ferrule, PEEK, 1/4-28 Flat-Bottom, for 1/8" OD Natural - 10 Pack
P-360 Super Flangeless™ Ferrule, PEEK, 1/3-28 Flat-Bottom, for 1/8" OD Natural - Single
P-359X Super Flangeless™ Ferrule Tefzel™ (ETFE), 1/4-28 Flat-Bottom, for 1/8" OD Yellow - 10 Pack
P-359 Super Flangeless™ Ferrule Tefzel™ (ETFE), 1/4-28 Flat-Bottom, for 1/8" OD Yellow - Single
P-357-2 Super Flangeless™ Ferrule w/SST Ring, PEEK M6 Flat-Bottom, for 2mm OD Natural - Single
P-357-1 Super Flangeless™ Fitting PEEK, M6 Flat-Bottom, for 2mm OD - Black/Natural Short - Single
P-357 Super Flangeless™ Fitting PEEK, M6 Flat-Bottom, for 2mm OD - Black/Natural Standard - Single
P-355 Super Flangeless™ Ferrule, PCTFE, 1/4-28 or M6 Flat-Bottom, for 1.8mm OD -Green
P-353 Flangeless Ferrule M6 or 1/4-28 Flat-Bottom, 2.5mm Tefzel™ (ETFE)
P-352 Super Flangeless™ Ferrule, PEEK, M6 or 1/4-28 Flat-Bottom, for 1/8"OD Black - Single
P-350X Super Flangeless™ Ferrule PEEK w/SST Ring, 1/4-28 Flat-Bottom, for 1/8" OD Natural - 10 Pack
P-350 Super Flangeless™ Ferrule PEEK w/SST Ring, 1/4-28 Flat-Bottom, for 1/8" OD Natural - Single
P-349 Super Flangeless™ One Piece Assembly, PEEK, 1/4-28 Flat Bottom, for 1/8" OD
P-348 Flangeless Short Headless Nut 1/14-28 Flat-Bottom, for 1/8" OD
P-347X Metric Flangeless Nut Short PEEK, M6 Flat-Bottom, 1.8mm-1/8" OD Black - 10 Pack
P-347BX Metric Flangeless Nut Short PEEK, M6 Flat-Bottom, 1.8mm-1/8" OD Blue - 10 Pack
P-347B Metric Flangeless Nut Short PEEK, M6 Flat-Bottom, 1.8mm-1/8" OD Blue
P-347 Metric Flangeless Nut Short PEEK, M6 Flat-Bottom, 1.8mm-1/8" OD Black
P-345X Flangeless Nut PFA, 1/4-28 Flat-Bottom, for 1/8" OD Natural - 10 Pack
P-345 Flangeless Nut PFA, 1/4-28 Flat-Bottom, for 1/8" OD Natural - Single
P-344X Flangeless Ferrule Tefzel™ (ETFE), 5/16-24 Flat-Bottom, for 4mm OD Natural - 10 Pack
P-344 Flangeless Ferrule Tefzel™ (ETFE), 5/16-24 Flat-Bottom, for 4mm OD Natural - Single
P-343X Flangeless Ferrule Tefzel™ (ETFE), 1/4-28 or M6 Flat- Bottom, for 3mm OD Orange -10 Pack
P-343 Flangeless Ferrule Tefzel™ (ETFE), 1/4-28 or M6 Flat- Bottom, for 3mm OD Orange -Single
P-342X Flangeless Ferrule Tefzel™ (ETFE),1/4-28 or M6 Flat- Bottom, for 1.8mm OD Green - 10 Pack
P-342 Flangeless Ferrule Tefzel™ (ETFE),1/4-28 or M6 Flat- Bottom, for 1.8mm OD Green - Single
P-340 Flangeless Ferrule Tefzel™ (ETFE), 1/4-28 Flat-Bottom, 1/8" OD Natural - Single
P-338 Flangeless Nut Delrin®, 1/4-28 Flat-Bottom, 1/8" OD - Purple
P-336 Super Flangeless™ Nut Short, Headless 1/4-28 Flat Bottom, for 1/8" OD - Natural
P-335Y Flangeless Nut Short, PEEK 1/4-28 Flat-Bottom, for 1/8" OD Yellow
P-335X Flangeless Nut Short, PEEK 1/4-28 Flat-Bottom, for 1/8" OD Natural - 10 Pack
P-335R Flangeless Nut Short, PEEK 1/4-28 Flat-Bottom, for 1/8" OD Red
P-335OR Flangeless Nut Short, PEEK 1/4-28 Flat-Bottom, for 1/8" OD Orange
P-335G Flangeless Nut Short, PEEK 1/4-28 Flat-Bottom, for 1/8" OD Green
P-335B Flangeless Nut Short, PEEK 1/4-28 Flat-Bottom, for 1/8" OD Blue
P-335 Flangeless Nut Short, PEEK 1/4-28 Flat-Bottom, for 1/8" OD Natural
P-332 Super Flangeless™ Nut Delrin®, 1/4-28 Flat-Bottom, for 1/8" OD Black - Single
P-331Y Super Flangeless™ Nut PEEK, 1/4-28 Flat-Bottom, for 1/8" Yellow
P-331OR Super Flangeless™ Nut PEEK, 1/4-28 Flat-Bottom, for 1/8" Orange
P-331G Super Flangeless™ Nut PEEK, 1/4-28 Flat-Bottom, for 1/8" Green
P-331BLK Super Flangeless™ Nut PEEK, 1/4-28 Flat-Bottom, for 1/8" Black
P-331B Super Flangeless™ Nut PEEK, 1/4-28 Flat-Bottom, for 1/8" Blue
P-331 Super Flangeless™ Nut PEEK, 1/4-28 Flat-Bottom, for 1/8" Natural

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