Heyco Products
Bushings and Plugs
Snub/Open/Closed Bushings | Shorty Bushings | Heyco Snap Bushings | Snap Bushings | Universal/Armor Bushings | Halogen-Free Hole Plug | Threaded Insulating Bushings | Flexible Grommetting | Metric Dome Plugs/Snap Bushings |
Dome Plugs | Halogen-Free Hole Plugs | Shorty/Double "D" Plugs | Window Plugs | Pry Out Plugs | Vent Plugs |
Liquid Tight Knock-Out Seals | Glossy Plugs | Feets of Strength | Adhesive Backed Bumpers

Help me Choose  HELP ME CHOOSE

Heyco® Knock-out Seals

Heyco® Knock-out Seals Underwriters Recognized under the Components Program of Underwriters' Laboratories File #E-15331
Canadian Standards Association Certified by Canadian Standards Association File #LR-8919
 
  • Plugs electrical knock-outs.
  • Molded in gray color to resemble galvanized steel.
  • Six trade sizes fit 1/2" to 2" knock-out holes.
  • Knock out seals lock firmly in boxes up to 1/8" thick (1/4" thick for KOS 2).
  • Installs quickly with fingertip pressure (no tool required).
  • Knock out seals are economical.
  • Molded of type 6/6 nylon.  ASTM D-4066; flammability classification 94V-2; temperature index 125?C.
Swipe
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.

Heyco® Knock-out Seals
Heyco?Liquid Tight Knock-out Seals
Heyco®Liquid Tight Knock-out Seals Underwriters Listed under Underwriters' Laboratories File #E-28430
Canadian Standards Association Certified by Canadian Standards Association File #LR-81067
 
  • Oil tight, rain tight, submersible knock out seals.
  • Three trade sizes fit 1/2" to 1" knock-out holes.
  • Locks firmly in boxes from .030" (0,8mm) to .125" (3,2mm) thick.
  • Install knock out seals quickly with fingertip pressure (no tool required).
  • Molded of Santoprene 251-80.  Flammability classification 94V-0.
Swipe
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

Heyco®Liquid Tight Knock-out Seals

Our website uses cookies. For more information on our cookie use, see our Privacy Policy. By continuing to use this website you agree to our use of these cookies.