Stainless Steel Duolok Tube Fitting, 0.75 Inch Tube OD Plug

Description & Features

SSP Duolok Stainless Tube Fittings deliver reliable leak-proof connections in instrumentation and process tubing systems. The double ferrule design accommodates variations in tubing materials hardness and wall thickness to ensure leak-tight connections across numerous applications.

Duolok fittings including the Stainless Steel Duolok Tube Fitting 0.75 Inch Tube OD Plug offer gageability to verify sufficient pull-up during initial installation. All components are heat code traceable and certified material test reports (CMTRs) are available guaranteeing quality from type 316 stainless steel in compliance with ASTM standards.

Interchangeability is a key feature as these fittings are entirely compatible with Swagelok brand tube fittings. Duolok tube fittings are pressure-rated to match the maximum allowable working pressures of the recommended stainless steel tubing. However specific designs may carry different ratings.

These fittings are built to function reliably across a wide range of temperatures. For elevated temperature applications additional assistance may be required to ensure optimal performance. Always refer to safety information for proper selection and use of tubing and fittings.

Supplier Part Number: ISSD12P

Specifications

Brand
SSP
Connection Size 1
3/4 in
Fitting Type
Plug
Hex Size
1-1/8 in
Material
Stainless Steel
Series
P Series
Sg Gageability
Duolok® Tube Fittings are Designed, Manufactured and Quality Controlled to be Gaugeable for Sufficient Pull-up During Initial Installation
Sg Interchangeability
Duolok® Tube Fittings are Designed, Manufactured and Quality Controlled to be Totally Interchangeable with the Swagelok® Brand of Tube Fittings
Sg Pressure Rating
Generally, Duolok® Tube Fittings are Rated for Pressures Equal to the Maximum Allowable Working Pressures of the Tubing Recommended for Use with the Fittings (Stainless Steel Tubing), Some Specially Designed Fittings, Bored-through Fittings, an Fittings,
Sg Temperature Factors
Duolok® Tube Fittings Function Reliably in an Extremely Wide Range of Operating Temperatures, Elevated Temperatures will Reduce the Maximum Working Pressure Capability of the Tubing System, for Applications at Elevated Temperatures

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Product Questions & Answers (2)

Question by: Marvin E on Apr 3, 2026, 7:19 PM
What size tubing does this plug fit?
Answer by: Customer Support on Apr 5, 2026, 7:16 PM
This plug is designed for use with 0.75 inch OD tubing.
Question by: Harold F on Dec 7, 2025, 7:09 AM
got a 3/4 inch stainless tube run and need to cap it off, is this the right kind of plug?
Answer by: Customer Support on Dec 8, 2025, 9:07 AM
For closing off a 0.75 inch tube OD connection in an instrumentation or process tubing setup, this Duolok plug is the matching size. It is a double ferrule stainless tube fitting meant to make a leak tight seal on the tube.

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