Heyco Knock-out Seals
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   ulrec1i2.gif (519 bytes)Recognized under the Components Program of Underwriters' Laboratories File #E-15331
ne_csa_mark1.gif (1674 bytes)Certified by Canadian Standards Association File #LR-8919

  • Plug electrical knock-outs.
  • Molded in gray color to resemble galvanized steel.
  • Siz trade sizes fit 1/2" to 2" knock-out holes.
  • Lock firmly in boxes up to 1/8" thick (1/4" thick for KOS 2).
  • Install quickly with fingertip pressure (no tool required).
  • Economical.
  • Molded of type 6/6 nylon. ASTM D-4066;flammability classification 94V-2;temperature index 125°C.

Chassis Dimensions

       Part Dimensions

Maximum
Thickness

Mounting
Hole
Diameter

 Trade Size Part No. Description B
Head
Diameter		 C
Overall
Height
in.       mm. in.       mm.       in.        mm. in.        mm.
.125        3,2 .875        22,2 1/2 3997 KOS 1/2 1.015       25,8 .453          11,5
.125        3,2 1.093      27,8 3/4 3998 KOS 3/4 1.218       31,0 .453          11,5
.125        3,2 1.375      34,9 1 3999 KOS 1 1.500       38,1 .453          11,5
.125        3,2 1.750      44,5 1-1/4 4000 KOS 1-1/4 1.906       48,4 .453          11,5
.125        3,2 2.000      50,8 1-1/2 4001 KOS 1-1/2 2.140       54,4 .453          11,5
.250        6,4 2.500      63,5 2 4002 KOS 2 2.750       69,9 .750          19,1

Standard Color: Silver Gray.
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Heyco Liquid Tight Knock-out Seals
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   ulbal1i1.gif (1059 bytes)Listed under Underwriters' Laboratories File #E-28430
ne_csa_mark1.gif (1674 bytes)Certified by Canadian Standards Association File #LR-81067

  • Oil tight, rain tight, submersible.
  • Three trade sizes fit 1/2" to 1" knock-out holes.
  • Lock firmly in boxes from .030" (0,8mm) to .125" (3,2mm) thick.
  • Install quickly with fingertip pressure (no tool required).
  • Molded of Santoprene 251-80. Flammability classification 94V-0.

 

Chassis Dimensions

     Part Dimensions

Maximum
Thickness

Mounting
Hole
Diameter

 Part No. Description B
Head
Diameter		 C
Overall
Height		 A
Head
Thickness
in.       mm. in.       mm.     in.        mm. in.        mm. in.        mm.
.125        3,2 .875        22,2 3833 KOS-LT 1/2 1.281       32,5 .500       12,7 .359            9,1
.125        3,2 1.093      27,8 3835 KOS-LT 3/4 1.531       38,9 .546       13,9 .390            9,9
.125        3,2 1.375      34,9 3837 KOS-LT 1 1.796       45,6 .562       14,3 .421          10,7

Standard Color: Black.

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