Column Ferrules, Nuts, and Specialized Hand Tools

Supelco offers ferrules, nuts, and specialized hand tools for both capillary and packed column use. SupeltexR ferrules form leaktight seals without sticking to columns, and they do not require back ferrules. We recommend:

  • Supeltex M-2A, CapSeal Bullet, or Supeltex M-4 ferrules for fused silicacapillary columns
  • Supeltex M-2A or Supeltex M-4 ferrules for glass columns
  • Supeltex M-2A or Supeltex M-2 ferrules for metal columns

Supeltex M-1
  • Max. Temp.: 250 °C
  • Composition: Ceramic-filled PTFE
  • Characteristics: Ideal for connections to mass spectrometers. High reusability.Isothermal use only.

Supeltex M-2
  • Max. Temp.: 350 °C
  • Composition: DuPont VESPEL SP-1 (100% polyimide)
  • Characteristics: High reusability.

Supeltex M-2A
  • Max. Temp.: 400 °C
  • Composition: DuPont VESPEL SP-21 (85% polyimide/15% graphite)
  • Characteristics: Seals at 1/4-turn past fingertight. High reusability. Won′t stick to metal or glass.

Supeltex M-2B
  • Max. Temp.: 350 °C
  • Composition: DuPont VESPEL SP-211 (75% polyimide/15% graphite, 10% PTFE)
  • Characteristics: Conforms easily to capillary column, ensuring an effective seal and less chance of breakage.

Supeltex M-4
  • Max. Temp.: 450 °C
  • Composition: Flexible graphite
  • Characteristics: Seals at 1/4-turn past fingertight. Maximum sealing surface contact, reduced risk of column contamination at installation. An improved design. Supelco has refined the design of graphite ferrules so that we can offer you the finest quality ferrule available. Compare these ferrules to the graphite ferrules you are now using. Supeltex M-4 ferrules offer a clean, sharp profile with minimal flash.

CapSeal Bullet
  • Max. Temp.: 450 °C
  • Composition: Graphite in an aluminum base
  • Characteristics: Seals at 1/8-turn past fingertight. Reusable. A special end taper reduces graphite extrusion into fitting. Will not adhere to fittings. Reusable CapSeal Bullet ferrules consist of a graphite material captured in an aluminum base. This unique design keeps the ferrule from adhering to the fitting, making it easy to remove. Eliminate the headache of digging out a stuck ferrule and risking damage to your fitting.

O-Ring
  • Max. Temp.: 200 ° C
  • Composition: Silicone
  • Characteristics: Seals column having O.D. over or under specifications.

PTFE
  • Max. Temp.: 250 °C
  • Composition: PTFE
  • Characteristics: Seals at 1/8-turn past fingertight.