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Stainless Steel Duolok Tube Fitting, 0.25 Inch Tube OD Nut

Brand Ssp Fittings Corp	Brand SSP Fittings Corp	Pack Size 1.00	UOM EA	G 0.56	L 0.50	Supplier Part Number ISSD4N	T 0.25	Alternate Part Numbers Alternate Part Number C1FP15, Alternate Part Number MI-08750225, Alternate Part Number MINO-00766X89716, Alternate Part Number SS-402-1	Product Weight 0.03 lbs

Product Questions & Answers 2

Product Questions & Answers

these swap out direct with Swagelok nuts, right? got a line already running Swagelok fittings and just need to replace a nut on a 1/4 inch tube connection

Question by: Earl H on Jan 7, 2026, 9:10 PM

Full interchangeability with Swagelok tube fittings is built into the Duolok design, so swapping in this nut on an existing Swagelok setup is exactly what it's made for. The 0.25 inch tube OD size lines up for quarter-inch tubing connections, and the double ferrule system works the same way you're already used to. No reworking the fitting body or ferrules already in place.

Answer by: Customer Support on Jan 9, 2026, 6:04 AM

Will this nut work with a standard Swagelok fitting of the same size?

Question by: Floyd R on Nov 15, 2025, 11:46 AM

Because Duolok fittings are designed to be interchangeable with Swagelok fittings, this nut should work just fine with a Swagelok fitting of the same size.

Answer by: Customer Support on Nov 16, 2025, 3:29 PM

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