Bi-Lok Industries®
1/4 " Tube OD x 1/8" NPT Male Connector
316 Stainless Steel Instrument Grade
Part / Ref. SS-400-1-2

This fitting is interchangeable with other major manufactures of the dual ferrule system such as Swagelok, Parker A-Lok, Hoke Gyrolok, Bi-Lok, Brennan, DK-Lok, Ham-Let, HY-Lok, SSP, Superlok, and Tylok. It is even interchangeable with single ferrule fittings such as Parker CPI, Tylok CS-Lok, SSP Unilok, and Ham-Let One-Lok. DO NOT INTER-MIX FRONT & BACK FERRULES. Ferrules should be considered one component. For example, do not inter-mix a Hoke front ferrule with a Swagelok back ferrule as manufactures make different variations.

Selection of the proper size can be found by measuring the outside diameter of your tubing with suggested tolerances not to exceed ±0.003" (1/16" to 1/8") and ±0.005" (3/16" to 1") and can be installed on all non-flared metal tubing such as steel, stainless steel, copper, aluminum, and non-metal tubing such as polyethylene, polypropylene, nylon, PFA, TFE and soft PVC. The tube end threads are 20 per inch and not compatible with plumbing fittings found in your home or local hardware store.

The parts are manufactured to exacting specifications of ASME (American Society of Mechanical Engineers, ASTM (American Society for Testing Materials) & ANSI (American National Standards Institute) from an ISO 9001 certified facility to insure safety and reliability of service whenever the brands are intermixed.

Important Note: This is a NPT (National Pipe Taper) thread fitting and is not available for purchase as an NPTF (National Pipe Taper Fuel) variant in 316 stainless steel. NPTF, also referred to as "Dryseal" is designed to provide a leak free seal without PTFE (Teflon) tape. However, according to Parker Industries, all NPTF fittings should require tape/sealant. NPT fittings always require tape and are interchangeable and compatible with NPTF. NPT/NPTF size is not a measured size but rather an industry designation and does not represent the actual inside or outside diameter of the fitting. For example, a 1/4" NPT/NPTF fitting is over 1/2" outside diameter.

Need more? Different size? Click here for the theDoDadman's store. Using the outside diameter of the tube size needed, locate the correct parameter below and input this into the store's search engine. This will return both Tube & Tube x NPT stainless steel instrumentation fittings at the lowest price anywhere.