Reducing Ferrules - External

external reducing ferrule

Reducing ferrules provide an inexpensive way to connect small temporary transfer lines to valves or fittings designed for larger tubing. For long term use, we recommend our reducing unions, internal reducers (IZRs), or external reducers (EZRs), as appropriate.

External ZDV reducing ferrules are designed for use with all standard external style fittings - that is, those with a female nut and a male fitting detail. This ferrule has a slightly longer pilot than the internal version, to accommodate the longer external detail. The result is a zero dead volume fitting. A single groove indicates that the ferrule has the longer pilot and is for use in an external detail.

Select a material below to view sizes and product numbers:

PEEK
PTFE, glass-filled

CTFE
Polyimide, Valcon

PEEK internal reducing ferrules - package of 5

Properties: good chemical resistance and mechanical properties at slightly elevated temperatures

Size Product No.
1/16" to 1/32" EZRF1.5PK-5
1/8" to 1/32" EZRF2.5PK-5
1/8" to 1/16" EZRF21PK-5
1/4" to 1/16" EZRF41PK-5
1/4" to 1/8" EZRF42PK-5

CTFE internal reducing ferrules - package of 5

Properties: resists all inorganic corrosives; produced as Kel-F®

Size Product No.
1/16" to 1/32" EZRF1.5KF-5
1/8" to 1/32" EZRF2.5KF-5
1/8" to 1/16" EZRF21KF-5
1/4" to 1/16" EZRF41KF-5
1/4" to 1/8" EZRF42KF-5

Glass-filled PTFE internal reducing ferrules - package of 5

Properties: inert, mechanically stable

Size Product No.
1/16" to 1/32" EZRF1.5TFG-5
1/8" to 1/32" EZRF2.5TFG-5
1/8" to 1/16" EZRF21TFG-5
1/4" to 1/16" EZRF41TFG-5
1/4" to 1/8" EZRF42TFG-5

Valcon polyimide internal reducing ferrules - package of 5

Properties: high temp, graphite reinforced

Size Product No.
1/16" to 1/32" EZRF1.5V-5
1/8" to 1/32" EZRF2.5V-5
1/8" to 1/16" EZRF21V-5
1/4" to 1/16" EZRF41V-5
1/4" to 1/8" EZRF42V-5

MORE INFORMATION

SEE ALSO

TECH TIP

If you're looking for 1/16" and 1/32" reducing ferrules with smaller IDs to use with fused silica, check out our FS and FSR adapters.

POLYMERS AT A GLANCE

  • CTFE
    Resists all inorganic corrosives; produced as Kel-F®
  • PEEK
    Good chemical resistance and mechanical properties at elevated slightly temperatures
  • PTFE, glass filled
    Inert, mechanically stable
  • Polyimide, Valcon
    High temp, graphite reinforced