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Nylo-Seal
Hardware_Fittings_Nylo-Seal
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. Reference Chart
259-N Insert (Nylon)
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
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
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
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
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
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
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
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.
PN
Size (In.)
259-N04
1/4
259-N06
3/8
259-P04
1/4
259-P06
3/8
261-N04
1/4
261-N06
3/8
262-N04
1/4
262-N06
3/8
264-N04
1/4
264-N06
3/8
265-N04
1/4
265-N06
3/8
266-N04X02
1/4 x 1/8
266-N04X04
1/4 x 1/4
266-N06X04
3/8 x 1/4
266-N06X06
3/8 x 3/8
268-N04X02
1/4 x 1/8
268-N04X04
1/4 x 1/4
268-N06X04
3/8 x 1/4
268-N06X06
3/8 x 3/8
269-N04X02
1/4 x 1/8
269-N04X04
1/4 x 1/4
269-N06X04
3/8 x 1/4
269-N06X06
3/8 x 3/8
271-N04X02
1/4 x 1/8
271-N04X04
1/4 x 1/4
271-N06X04
3/8 x 1/4
271-N06X06
3/8 x 3/8
272-N04X02
1/4 x 1/8
272-N04X04
1/4 x 1/4
272-N06X04
3/8 x 1/4
272-N06X06
3/8 x 3/8
282-N04
1/4
282-N06
3/8
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