Swagelok SS-4-TSW-6 Stainless Socket Weld Union

Swagelok SS-4-TSW-6 is a 316 stainless steel tube socket weld union designed to join two 1/4 in. OD tubes with socket-weld ends. Crafted from 316 stainless steel, this straight union delivers strong corrosion resistance suitable for clean, high-purity process environments. It features socket-weld connections on both ends, providing a compact, high-integrity tube-to-tube joint for stainless piping runs in demanding service. This part is routinely used in chemical processing, semiconductor, pharmaceutical, and oil-and-gas applications where durable, weld-compatible fittings are essential and 1/4 in. tubing is required. The SS-4-TSW-6 is part of Swagelok’s weld fittings lineup, offering precise geometry and a stable stainless-steel body to help maintain flow, purity, and mechanical stability in critical piping systems.