Tylok® & CBC-LOK® Tube Fitting Cross-Reference to Crestflo Equivalents

A Tylok cross-reference takes a Tylok® or CBC-LOK® instrumentation compression (ferrule) tube fitting and, working from tube OD, thread form, and ferrule geometry, points you to the dimensionally interchangeable Crestflo equivalent you can specify and buy instead. Crestflo builds single- and double-ferrule instrumentation tube fittings designed to interchange with the Tylok envelope. That interchange is qualified to ASTM F1387. It covers 316/316L through exotic alloys, and it spans both imperial and metric sizes.

This cross-reference applies only to instrumentation compression (ferrule) tube fittings. It doesn't cover hydraulic JIC or pipe couplings, plumbing compression fittings, or electrical wire ferrules. Tylok pipe fittings, the CPI-style ones, fall outside its scope too.

Tylok® and CBC-LOK® are trademarks of Tylok International, Inc. Crestflo makes interchangeable equivalents on an independent basis, with no affiliation, endorsement, or sponsorship from Tylok International, Inc. Genuine Tylok parts aren't something Crestflo sells. References to brand names and part numbers appear here strictly for identification.

Request your Tylok cross-reference: Send over your Tylok or CBC-LOK part list or BOM, and the Crestflo engineering team will send back the matching equivalents along with an RFQ, request a quote.

Tylok Interchange Is Also Called a Cross Reference, Conversion Chart or Equivalent

People land on this same mapping through a dozen different phrasings, but they're all after one thing: the link between a Tylok part and its Crestflo counterpart. Sometimes it's called a Tylok cross reference. Other times a cross-reference chart, an interchange, an interchange chart, a conversion chart, an equivalent, an alternative, or a replacement. The brand itself turns up under several names too, including Tylok, Tylok International, and its CBC-LOK® double-ferrule instrumentation line. Single-ferrule and flareless compression fittings fall under this same search as well. Then there are the search patterns themselves: part-number lookups like "tylok part number cross reference," PDF-chart searches such as "tylok cross reference pdf," the reversed phrasing "cross reference tylok," and bridge queries like "swagelok to tylok cross reference." Each one points to the same request: the drop-in Crestflo equivalent for a given Tylok or CBC-LOK item.

How the Tylok to Crestflo Interchange Works: Ferrule Geometry & Thread Parity

Compression (ferrule) instrumentation fittings seal through a defined geometric envelope: tube outside diameter, front- and back-ferrule profile, nut thread, and body bore. Two fittings interchange when those dimensions match up and the assembly grips and seals on the same tube. Crestflo builds its ferrule fittings to the Tylok and CBC-LOK dimensional envelope, mapped straight from the published Tylok catalog dimensions. Performance gets verified to ASTM F1387. The result: a Crestflo body, nut, and ferrule set makes up onto your existing tube the same way the original does.

The match here is dimensional, not a shared catalog. So the right terms are interchange and equivalent, never compatible or intermix. Crestflo doesn't recommend mixing ferrules or components across brands within a single made-up connection. Interchange covers both imperial (fractional) and metric tube sizes on every fitting, spanning tube OD from 1/4" and 6 mm up through 2" (50 mm), with matching end connections: NPT, NPTF, BSPT, BSPP, ISO-parallel, JIC 37°, SAE-ORB, socket-weld, butt-weld, and tube-OD ends. Crestflo supplies single and double ferrules to match Tylok and CBC-LOK geometry, hardened or non-hardened as required. Always check the specific part against your service conditions before converting.

Request Your Tylok Part-Number Cross-Reference Chart

Crestflo doesn't hand you a fixed public part-number table. Instead, it publishes validated equivalents part by part, so the mapping you get back reflects your actual Tylok and CBC-LOK designations: sizes, alloys, and end connections, all of it. You'll receive a same-part chart in HTML, not some gated PDF. Send over the Tylok part numbers, or the full BOM, and the engineering team sends back the interchange chart along with an RFQ. There's no static Tylok fittings catalog to dig through. Need to cross-reference more than one brand at once? Swagelok, Parker, Hoke, Fitok, DK-Lok and others are covered: use the master multi-brand interchange chart, or the cross-reference lookup tool.

Tylok Product Families Cross-Referenced: Fittings, Ferrules & Configurations

Every Tylok and CBC-LOK instrumentation setup has a matching Crestflo option within the instrumentation scope.

Ferrule count, hardness, and geometry aren't one-size-fits-all; each part gets matched individually. Curious about the design logic behind that choice? See single vs double ferrule from Crestflo.

Tylok Fitting Alloys: 316L Stainless Through Hastelloy, Inconel, Monel & Duplex

Tylok compression fittings typically run 316 stainless. Crestflo interchange goes further, spanning the full corrosion-resistant-alloy range: a core differentiator for sour, cryogenic, offshore, and high-halide service.

We also carry 304/304L, Duplex 2205, 254 SMO, AL-6XN, Alloy 20, Inconel 600/601/718/825, Incoloy 800/825, Monel K500, Hastelloy C-22/B-2/B-3/X, Nickel 200/201, and Titanium Gr2. UNS designations follow the standard published values. Availability, though, is limited to instrumentation fittings, valves, and tubing forms. Crestflo doesn't stock bar, sheet, plate, or mill products. Where specified, every corrosion-resistant alloy we supply is NACE MR0175 / ISO 15156 compliant.

ASTM F1387: The Standards-Based Proof Behind a Tylok Interchange Claim

Crestflo doesn't just claim its compression tube fittings interchange with Tylok's, it proves it. Every fitting gets qualified to ASTM F1387, the performance standard for compression tube fittings, which runs the fitting through hydraulic proof, burst, and impulse pressure testing, plus pull-out, vibration, and thermal-cycling. That's the difference: objective, dimensional, standards-based qualification instead of a marketing line. It's what actually backs a Tylok-to-Crestflo interchange, and it's a level of depth most published Tylok cross-reference charts simply don't offer.

Values follow the applicable standard, and they're customizable to your requirements. For more detail, see the ASTM F1387 standard page, NACE MR0175, EN 10204 MTC, traceability, and testing & inspection. Crestflo holds ISO 9001 / 14001 / 45001 and PED certification.

Why Switch From Tylok to Crestflo: The Alternative & Interchange Case

For buyers weighing a Tylok replacement or alternative, the case for switching rests on real capability, not a marketing line. F1387-qualified drop-in interchange. Imperial and metric sizes on every fitting. Alloy depth running from 316L up through Hastelloy, Inconel, Monel, and Duplex. Heat-number traceability backed by EN 10204 3.1 MTC, with 3.2 available on request. Small MOQ, private label options, and a post-tariff cost advantage for US buyers. Crestflo serves the US market, with Indian origin and US/European melt available on request. The interchange proof and the alloy range are the wedge here; that isn't a claim about US inventory.

Is Tylok Interchangeable With Swagelok or Crestflo?

In a Tylok vs Swagelok vs Crestflo comparison, all three brands build compression fittings to comparable dimensional envelopes, so fittings across brands can interchange when the tube OD, thread, and ferrule geometry line up. Crestflo removes the guesswork here: it qualifies its equivalents to ASTM F1387 against the Tylok envelope, which means a Tylok vs Crestflo decision rests on documented interchange proof, not a lookalike claim. Confirm interchange on the specific part and service before converting anything. Don't mix components within a single made-up connection, either. For a mixed BOM, Crestflo also publishes a Swagelok cross-reference and a master interchange chart, including the "Swagelok to Tylok" bridge that so many buyers go looking for.

Request Your Tylok Cross-Reference & Interchange Quote

Send us your Tylok or CBC-LOK part list or BOM, and we'll put together a same-part interchange chart along with an RFQ. No dead ends. No obligation. Reach the Crestflo engineering team at sales@crestflousa.com or call +1 346 594 9005 in Houston, TX.

• Request a quote, same-part Tylok interchange RFQ
• Request a sample, validate the fit before you convert
• Cross-reference lookup tool, check equivalents online
• Become a distributor, line-card and stocking programs

Datasheets and CAD models are available to customers on request.

Why Crestflo for Tylok Interchange

Crestflo is the instrumentation arm of an export house that's been in business for four decades and carries Government-of-India recognition. It has a solid delivery record across the Middle East, and now it's bringing that same track record to US buyers through a drop-in interchange program. That promise isn't a marketing line. It's backed by real capability:

• ASTM F1387-qualified fittings, the objective interchange proof behind every Tylok-to-Crestflo equivalent.
• Single and double ferrules, hardened or non-hardened, matching Tylok and CBC-LOK geometry.
• Both imperial and metric sizes on every fitting, in tube OD to 2" (50 mm).

316L, Hastelloy, Inconel, Monel, Duplex, Titanium, we carry exotic alloys that most distributors simply don't stock.

• Heat-number traceability on every part with EN 10204 3.1 MTC (3.2 on request).
• Small MOQ and private label, US buyers come out ahead on cost once tariffs are factored in.
• Ready stock on standard items; specials get made to order, with delivery running 6–8 weeks, details are on the lead time page.
• Product originates in India, though US or European melt is available on request. Full material traceability comes with it, and origin plus TAA options are laid out plainly on the US-origin compliance page.

We Engineer Confidence.

Frequently Asked Questions About Tylok Cross-Reference

Related Cross-References & Resources

• Cross-reference hub
• Swagelok cross-reference
• Master multi-brand interchange
• Cross-reference lookup tool
• Single vs double ferrule
• Tube fittings
• ASTM F1387 standard