Your search for "FITTINGS" revealed the following:
SS-400-C – Stainless Steel Swagelok Tube Fitting Cap, 1/4 in. Tube OD, 316 SS
S$8.09
Vendor: APSS Store
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SS-600-6 – Stainless Steel Swagelok Tube Fitting Union, 3/8 in. Tube OD, 316 SS
S$22.69
Vendor: APSS Store
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