Choose Options Quick view Duolok Duolok ISSD12UT Tube To Tube Union Tee 3/4'' Tube Duolok ISSD12UT Tube To Tube Union Tee 3/4'' Tube Material: 316 Stainless Steel Duolok Vs. Swagelok ® Comparison Design SSP Duolok tube fittings are designed and manufactured to provide a reliable, leak-proof connection in instrumentation... MSRP: $75.45 Choose Options Compare