{"id":803,"date":"2026-10-03T21:21:55","date_gmt":"2026-10-04T01:21:55","guid":{"rendered":"https:\/\/flange8.com\/?p=803"},"modified":"2026-10-03T21:21:55","modified_gmt":"2026-10-04T01:21:55","slug":"yor-lok-vs-swagelok-how-to-compare-compression-tube-fittings","status":"publish","type":"post","link":"https:\/\/flange8.com\/index.php\/2026\/10\/03\/yor-lok-vs-swagelok-how-to-compare-compression-tube-fittings\/","title":{"rendered":"Yor-Lok vs Swagelok: How to Compare Compression Tube Fittings"},"content":{"rendered":"

Double-ferrule tube fittings are selected for leak-tight instrument and process tubing, but interchangeability should never be assumed from appearance alone.<\/strong> This guide compares commonly searched alternatives\u2014including Yor-Lok, Swagelok, DK-Lok, FITOK, and other compression fitting systems\u2014through a specification and verification lens.<\/p>\n

What makes a compression fitting work?<\/h2>\n

A typical twin-ferrule fitting uses a body, nut, front ferrule, and back ferrule. Correct tube preparation, insertion depth, assembly method, material condition, and tightening are all critical. The seal is a system result, not simply a brand name stamped on a component.<\/p>\n\n\n\n\n\n\n\n\n
Review area<\/th>\nWhy it matters<\/th>\nVerification<\/th>\n<\/tr>\n<\/thead>\n
Tube OD and wall<\/td>\nControls grip and seal geometry<\/td>\nMeasure tube and confirm catalog limits<\/td>\n<\/tr>\n
Material<\/td>\nMust suit fluid, temperature and corrosion<\/td>\nCheck alloy, heat treatment and certificates<\/td>\n<\/tr>\n
Thread and end connection<\/td>\nSimilar threads can still differ in sealing method<\/td>\nConfirm exact standard and gender<\/td>\n<\/tr>\n
Assembly procedure<\/td>\nUnder- or over-tightening can damage performance<\/td>\nFollow approved instructions and inspection plan<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Yor-Lok vs Swagelok: a safe comparison method<\/h2>\n

Searches for Yor-Lok vs Swagelok<\/em>, Swagelok vs Yor-Lok<\/em>, or a Swagelok equivalent<\/em> often seek a replacement. Treat a cross reference as a starting point only. Compare the exact part number, tubing size, material, pressure-temperature limits, end connection, seal design, and required approvals. Do not mix components from different fitting systems unless the manufacturer and project specification explicitly permit it.<\/p>\n\n\n\n\n\n\n\n\n
Question<\/th>\nDo not assume<\/th>\nGood practice<\/th>\n<\/tr>\n<\/thead>\n
Will it mate?<\/td>\nSame nominal size means compatibility<\/td>\nVerify body, nut and ferrules as a complete system<\/td>\n<\/tr>\n
Will it seal at duty?<\/td>\nCatalog pressure alone represents installed service<\/td>\nReview temperature, vibration, media and installation<\/td>\n<\/tr>\n
Can parts be mixed?<\/td>\nVisual similarity proves interchangeability<\/td>\nUse one qualified system unless written approval says otherwise<\/td>\n<\/tr>\n
Is it an alternative?<\/td>\nBrand substitution is only a price decision<\/td>\nCheck quality, traceability, support and approvals<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

ParkER compression fittings and cross-reference requests<\/h2>\n

For a Parker to Swagelok cross reference, identify whether the request concerns tube fittings, pipe fittings, valves, or another product family. Record the complete original specification before proposing a substitute. Include the fitting configuration, tube OD, thread, material, seal type, pressure class, cleanliness requirements, and any site approval process.<\/p>\n

DK-Lok vs Swagelok and FITOK vs Swagelok<\/h2>\n

Alternative brands may offer comparable product categories, but engineering suitability has to be confirmed at the component level. In safety-critical, high-pressure, toxic, high-purity, or cyclic service, follow the governing specification and obtain the required manufacturer data and project authorization before any substitution.<\/p>\n

Installation controls that protect performance<\/h2>\n
    \n
  • Cut tubing squarely; deburr and clean it without scratching the sealing surface.<\/li>\n
  • Insert the tube fully and mark it where the approved procedure requires.<\/li>\n
  • Use the specified tightening method and avoid repeated uncontrolled remakes.<\/li>\n
  • Support tubing against vibration and side loading.<\/li>\n
  • Leak-test and document the assembly when required by the service.<\/li>\n<\/ul>\n

    Practical selection checklist<\/h2>\n
      \n
    1. Define medium, design pressure, temperature, and cycling.<\/li>\n
    2. Confirm tube material, OD, and wall thickness.<\/li>\n
    3. Choose a complete fitting system suitable for the duty.<\/li>\n
    4. Verify part numbers and connection standards before procurement.<\/li>\n
    5. Use qualified assembly and inspection procedures.<\/li>\n<\/ol>\n

      Conclusion<\/h2>\n

      The best alternative is not the fitting that looks closest; it is the one proven suitable for the exact tube, service, specification, and installation method. Use cross-reference information carefully, preserve traceability, and validate any change before placing a fitting into service.<\/p>\n","protected":false},"excerpt":{"rendered":"

      Double-ferrule tube fittings are selected for leak-tigh […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[109],"tags":[327,329,328,325,320,322,326,324,330,321,323,319],"_links":{"self":[{"href":"https:\/\/flange8.com\/index.php\/wp-json\/wp\/v2\/posts\/803"}],"collection":[{"href":"https:\/\/flange8.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/flange8.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/flange8.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/flange8.com\/index.php\/wp-json\/wp\/v2\/comments?post=803"}],"version-history":[{"count":1,"href":"https:\/\/flange8.com\/index.php\/wp-json\/wp\/v2\/posts\/803\/revisions"}],"predecessor-version":[{"id":804,"href":"https:\/\/flange8.com\/index.php\/wp-json\/wp\/v2\/posts\/803\/revisions\/804"}],"wp:attachment":[{"href":"https:\/\/flange8.com\/index.php\/wp-json\/wp\/v2\/media?parent=803"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/flange8.com\/index.php\/wp-json\/wp\/v2\/categories?post=803"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/flange8.com\/index.php\/wp-json\/wp\/v2\/tags?post=803"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}