DK-LOK Compression Fitting Twin Ferrule Set, 3/4" Tube OD, SS316, DFS-12-S

Hy-Lok CFS-12-S316

Hy-Lok CFS Ferrule Set — spare parts for Hy-Lok two-ferrule tube fittings

Hy-Lok CFS-12-S316 is a ferrule set for 3/4 in. (19.05 mm) tube OD in 316 stainless steel, comprising one front ferrule and one back ferrule (Hy-Lok catalogue H-200TF, p. 69). indSpare stocks the DK-LOK DFS-12-S twin ferrule set, which matches it on tube OD, material and set composition. The two are listed as equivalents, not as interchangeable components: Hy-Lok's catalogue cautions against intermixing components of other manufacturers, so each brand's ferrules should be used with that brand's fitting body and nut.

Swagelok SS-1213-1

Swagelok Tube Fitting Ferrule Set ("-SET"), Gaugeable Tube Fittings, catalogue MS-01-140

Swagelok does not publish a 3/4 in. ferrule set: its ferrule-set range stops at 1/2 in. in every material. At 3/4 in. the equivalent Swagelok items are two separate part numbers — front ferrule SS-1213-1 and back ferrule SS-1214-1, both 316 stainless steel for Swagelok tube fittings. The part listed on this page is DK-LOK DFS-12-S, a single 3/4 in. 316 stainless steel twin-ferrule set containing one front and one back ferrule, so one DFS-12-S corresponds to one SS-1213-1 together with one SS-1214-1, not to either part number on its own. Ferrules are body-specific: each manufacturer specifies its ferrules for use only in its own fitting bodies, and Swagelok's catalogue advises against mixing ferrules, nuts and bodies from different manufacturers. DFS-12-S is therefore a like-for-like alternative set for DK-LOK fittings, not a service part for a Swagelok body. This cross-reference is provided for identification only; indSpare is not affiliated with Swagelok, and Swagelok is a trademark of its owner.