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Nylo-Seal tube fittings are exceptionally strong. The bodies, made of nylon, are stronger than machined fittings of similar composition. They are furnished complete with nut/sleeve assemblies, made of acetal copolymer. Since the sleeve snaps into and is retained by the nut there is no fumbling for a loose sleeve. Just insert tube into the fitting and tighten the nut 2 to 2-1/2 full turns. Note: The most frequently used combination of tube and pipe sizes are 1/4" Tube x 1/8" Pipe and 3/8" Tube x1/4" Pipe. For Nylo-Seal tubing, see "Accessories" tab Reference Chart 259-P CAP, 259-N Insert (Nylon) 261-N Nut and Sleeve Assembly Tube O.D. A D 1/4 3/8 1/8 3/8 7/16 13/64 Tube O.D. Thd. A C 1/4 7/16-20 15/32 9/16 3/8 5/8-20 37/64 3/4 262-N Union Tube O.D. A B C D E 1/4 1-25/64 63/64 5/8 7/32 15/32 3/8 1-21/32 1-1/4 13/16 23/64 19/32 264-N Union Tee Tube O.D. A B D E 1/4 1-9/64 47/64 7/32 15/32 3/8 1-11/64 31/31 11/32 19/32 266-N Female Connector Tube O.D. Pipe Thread A B C D E 1/4 1/8 1-9/64 15/16 9/16 7/32 9/16 1/4 1/4 1-5/16 1-7/64 11/16 7/32 47/64 3/8 1/4 1-27/64 1-7/32 11/16 11/32 3/4 3/8 3/8 1-27/64 1-7/32 13/16 11/32 3/4 265-N Elbow Union Tube O.D. A B D E 1/4 1-1/64 13/16 7/32 3/8 3/8 1-5/32 15/16 11/32 7/16 268-N Male Connector Tube O.D. Pipe Thd. A B C D E 1/4 1/8 1-13/64 1 5/8 15/64 15/32 1/4 1/4 1-25/64 1-3/16 5/8 15/64 11/16 3/8 1/4 1-17/32 1-21/64 13/16 5/16 19/32 3/8 3/8 1-19/32 1-25/64 13/16 11/32 19/32 269-N Male Elbow Tube O.D. Pipe Thd. A B D E F 1/4 1/8 1-1/64 13/16 7/32 3/8 27/32 1/4 1/4 1-1/64 13/16 13/32 3/8 1-1/32 3/8 1/4 1-9/64 15/16 5/16 7/16 1-1/32 3/8 3/8 1-9/64 15/16 11/32 7/16 1-3/32 271-N Male Run Tee Tube O.D. Pipe Thd. A B D E F 1/4 1/8 59/64 21/32 7/32 15/32 3/4 1/4 1/4 59/64 13/32 7/32 15/32 29/32 3/8 1/4 1-5/32 61/64 5/16 19/32 1-1/16 3/8 3/8 1-3/16 61/64 23/64 19/32 1-7/64 272-N Male Branch Tee Tube O.D. Pipe Thd. A B D E F 1/4 1/8 15/16 47/64 7/32 15/32 3/4 1/4 1/4 15/16 47/64 7/32 15/32 13/16 3/8 1/4 1-11/64 31/32 5/16 19/32 1-1/16 3/8 3/8 1-11/64 31/32 23/64 19/32 1-7/64 282-N Bulkhead Union Tube O.D. Pipe Thd. A B C D E F G 1/4 7/16-20 1-57/64 1-31/64 5/8 7/32 15/32 5/8 5/16 3/8 5/8-20 2-1/4 1-53/64 13/16 11/32 19/32 7/8 3/8 *Use 259N inserts w/all Poly-Flo tubing connections. Not needed w/ Nylo-Seal tubing.
Cross Check™ Torque Seal ORANGE
Cross Check™ Torque Seal - YELLOW