Tube-to-Tube Configurations

Tube-to-Tube Configurations

(5088 products)

Fittings that join tube to tube: unions, reducing unions, elbows, tees, crosses and bulkhead unions. Use them to splice, branch or turn a run without pipe threads. DK-Lok two-ferrule tube fittings make a gas-tight seal that holds up to vibration and pressure impulse, can be checked with a gap inspection gauge, and can be remade. Sizes run 1/16" to 2" and 2 to 50 mm OD, in 316 SS, brass, carbon steel and specialty alloys.

Need help matching a part number or checking a rating? Call 310-833-3353 or email sales@abesttube.com.


  • DK Lok

    DU-2-L625

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  • DK Lok

    DU-1-L625

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  • DK Lok

    DU-16-IN

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  • DK Lok

    DU-14-IN

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  • DK Lok

    DU-12-IN

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  • DK Lok

    DU-10-IN

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  • DK Lok

    DU-8-IN

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  • DK Lok

    DU-6-IN

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  • DK Lok

    DU-5-IN

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  • DK Lok

    DU-4-IN

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  • DK Lok

    DU-3-IN

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  • DK Lok

    DU-2-IN

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  • DK Lok

    DU-1-IN

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  • DK Lok

    DU-16-M

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  • DK Lok

    DU-14-M

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  • DK Lok

    DU-12-M

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  • DK Lok

    DU-10-M

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  • DK Lok

    DU-8-M

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  • DK Lok

    DU-6-M

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  • DK Lok

    DU-5-M

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  • DK Lok

    DU-4-M

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  • DK Lok

    DU-2-M

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  • DK Lok

    DU-3-M

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  • DK Lok

    DU-1-M

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