Swagelok SS-505-3 Stainless Steel Tubing Insert

Swagelok SS-505-3 Stainless Steel Tubing Insert is a precision stainless-steel sleeve sized for 5/16 in. outer-diameter soft plastic tubing with a 3/16 in. bore, designed for use with Swagelok tube fittings. This insert reinforces non-metallic tubing at the point of connection, providing a rigid core inside the tube so the fitting can clamp securely and maintain proper alignment. The insert material is stainless steel, offering corrosion resistance and a stable internal support within plastic tubing common in instrumentation and analytical setups. Sized specifically as 5/16 in. OD by 3/16 in. ID, SS-505-3 is intended for use with the corresponding Swagelok fittings that accept this insert sizing, enabling reliable transfer of fluids or gases through soft tubing while preserving seal integrity. Typical applications include laboratory instrumentation, sampling lines, and transfer lines where soft plastic tubing is terminated in Swagelok fittings, ensuring a clean, repeatable connection when assembling or servicing Swagelok systems.