Tubing Sleeves

Capillary Tubing Sleeves

Because most capillary tubing connections are made into coned receiving ports, where the port is not designed to be used with capillary tubing directly, special care must be used to ensure a good connection. While custom ferrules can help make these connections, they only offer a fixedlength nose—and because most tubing pockets will vary slightly in length, this can lead to leaking or dead volume.

To help save overall expense while maintaining a concentric connection with minimal dead volume, IDEX Health Science recommends the use of sleeves. Because sleeves are not permanently attached to a ferrule, they can easily adapt to varying tubing pocket depths. Additionally, because they are manufactured using Upchurch Scientific extruder polymer tubing, you are assured of the concentricity of the resultant connection.

1/16" OD Tubing Sleeves

These sleeves require a wrench tightened nut to achieve proper sealing. We recommend the hex-head SealTight™ Fittings. Many researches also use a stainless steel nut and ferrule with these sleeves, such as our U-400 and U-401 in Stainless Steel Fittings.

Use 1/32" OD PEEK or FEP sleeves to connect capillary tubing with the following:

• The F-113 Ferrule & Two-Piece Fingertight Fittings for 10-32 ports (224)
• The F-112 and P-416BLK MicroTight® Fittings—1/32" OD PEEK Tubing Sleeves only
• The 1/32" OD MicroTight Fittings
• The Rheodyne® RheFlex M4 Fitting for MX Module applications; the M-645 Valco®-Compatible Fitting

Fittings and tubing only shown to highlight how sleeves are designed to be used; they are not included with the sleeves.