What nuts and ferrules match in the Flangeless™ fitting system?

With its comprehensive product program, covering several port geometries and tubing outer diameters, the IDEX Flangeless™ fitting system might be a bit overwhelming to grasp. The product range includes fittings for five different flat-bottom port thread designs (10-32, M6x1, 1/4-28, 5/16-24, & 1/2-20), and ferrules to accommodate tubing with 11 various outer diameters ranging from 1.0 mm up to 5/16″ (7.9 mm). Questions may therefore arise about what combinations of ferrules and nuts can be used, and which port designs and tubing outer diameters they fit to.

Such questions could for example be:

• Can I use the P-200 ferrule for 1/16” OD tubing together with a metric fitting designed for M6x1 flat-bottom ports?
• What nuts and ferrules should I use to attach a tubing with 2.0 mm OD to a 1/4-28 flat-bottom port?

Detailed responses to the questions above are “yes, for example with nut P-247” and “ferrule P-363R with any 1/4-28 nut for 1/8 inch OD tubing”, respectively. Answers to all similar questions can be found in the product guide table for the Flangeless™ fittings. This table can be sorted on tubing outer diameter, or on port design, to find suitable nuts and ferrules. You can also sort it by ferrule or nut product number to find which tubing OD and port you can use them for. For your convenience this full table is duplicated below, but you will naturally also find it at the bottom of the product page for Flangeless™ fittings linked below.

If you need additional guidance to choosing suitable fittings for your fluidic system, the team at Biotech Fluidics is always ready to help.