Heyco Conduit, Tubing & Fittings Heyco-Flex™ Nylon Sweep Liquid Tight Conduit Fittings
Heyco-Flex™ Nylon Sweep Conduit Fitting

Material: Nylon 6/6

Certifications:

File E28430

File 84579 and 81067

Flammability Rating: 94V-2

Material Temperature Index: Maximum temperature on part not to exceed 105°C (221°F)

Ingress Protection Rating: IP 68 up to 70psi (5 bar) water pressure

 
  • Multiple sizes for use with Heyco-Flex™ conduit and tubing.
  • Smooth internal surfaces for easy wire installation around corners.
  • No disassembly required. Instead, the installer simply pushes the conduit or tubing onto the ferrule, then tightens the domed sealing nut. This completed assembly can then be secured in the panel by the locknut (or first secure the connector into an NPT threaded hole).
  • Convex ferrule ensures liquid tight seal.
  • No threading of the conduit or tubing is required to install. This eliminates the possibility of cutting the conduit and creating leak paths.
  • Complete conduit/connector system is reusable. Conduit will not wind tight onto the connector and can be easily removed without cutting and without damaging the connector.
  • Suitable for indoor/outdoor use; for original equipment manufacturers or field installers.
  • All nylon construction resists salt water, weak acids, gasoline, alcohol, oil, grease and other common solvents. This feature is not assessed by UL certification and testing.
  • Use of a sealing washer may be required for wet locations.
  • If using a tapped hole, Teflon® tape is needed on the threads of the connector, for all other applications an O-ring and Locknut are needed to attain liquid tight.
  • Hardware:
    • Black connectors up to 1" are provided with a nylon locknut; packed separately
    • Gray Connectors and Black connectors (larger than 1") are provided with an o-ring and a metal locknut as one assembled unit
 
Heyco-Flex™ Liquid Tight Conduit Fittings
90° Sweep, NPT Hubs
For Flexible, Nonmetallic Liquid Tight Heyco-Flex™ I Conduit and Heyco-Flex™ II Tubing
Fits
Conduit
Trade
Size		 Part Number Description Thread
Size		 Part Dimensions Sealing
Washer
Part No.
Color A
Clearance Hole		 B
Max O.A Height		 C
Max O.A Length		 D
Thread Length
Black Gray in. mm. in. mm. in. mm. in. mm.
3/8 8423 8424 HFC 3/8-90R * 1/2 NPT   .875 22,2 1.982   50,3 2.912   74,0 .520 13,2 3260
1/2 8425 8426 HFC 1/2-90R *
3/4 8427 8428 HFC 3/4-90R 3/4 NPT 1.109 28,2 2.293   58,2 3.280   83,3 3261
1 8412 8413 HFC 1-90R 1 NPT 1.375 34,9 2.833   71,9 3.964 100,7 .690 17,5 3262
8421 8422 HFC 1-90 1.375 34,9 2.840   72,1 3.180   80,8 .780 19,8
1-1/4 8652 8653 HFC 1-1/4-90R 1-1/4 NPT 1.734 44,0 4.100 104,1 4.725 104,1 .760 19,3 –
1-1/2 8654 8655 HFC 1-1/2-90R 1-1/2 NPT 1.984 50,4 4.750 120,7 5.200 132,1 .800 20,3 –
2 8656 8657 HFC 2-90R 2 NPT 2.469 62,7 5.420 137,7 5.800 147,3 .860 21,8 –
* Fittings used to attach two different conduit sizes to the same size hole.
 
Sealing Washers

Material: Thermoplastic Elastomer

Flammability Rating: 94V-0

Material Temperature Index: 125°C (257°F)–Max. temperature on part not to exceed 105°C (221°F)

  • For use with Heyco-Flex™ Fittings.
  • Liquid tight, dust tight and oil tight at enclosure.
  • Suitable for wet locations requiring a separate gasket between the box and fitting.
  • Also suitable for other panel sealing applications.
  • Easy to install since washers seal off on the perimeter, not on the connector threads.
  • Special double sealing ridges compensate for minor unevenness at enclosure.
 
Heyco® Sealing Washers
Will Fit These
Electrical Fitting
NPT Trade Sizes		 Part
Number		 Description Part Dimensions
A
Inside Diameter		 B
Outside Diameter		 C
Thickness
Black in. mm. in. mm. in. mm.
1/4 3258 SW 1/4   .54 13,7   .80 20,2 .13 3,2
3/8 3259 SW 3/8   .67 17,0 1.01 25,7
1/2 3260 SW 1/2   .85 21,6 1.24 31,5
3/4 3261 SW 3/4 1.03 26,2 1.50 38,1 .14 3,4
1 3262 SW 1 1.28 32,5 1.77 45,0 .18 4,6
1-1/4 3264 SW 1-1/4 1.66 42,2 2.16 54,9 .16 4,1
1-1/2 3265 SW 1-1/2 1.86 47,2 2.44 62,0
2 3257 SW 2 2.32 58,9 2.93 74,4 .18 4,6