Conduit Fittings & Accessories

Heyco® TPE Liquid Tight Hole Plugs

Heyco Heyco^® TPE Liquid Tight Hole Plugs feature oil-tight, rain-tight, and submersible sealing options. These hole plugs are available in multiple nominal sizes that fit true-size mounting holes from 0.5" (12.7mm) to 1" (25.4mm). The TPE liquid-tight hole plugs are available in three trade sizes to fit 1/2" to 1" knock-out holes. These hole plugs lock firmly in boxes with thicknesses from .03" (0.8mm) to .13" (3.2mm). The TPE liquid-tight hole plugs exhibit a 94V-0 flammability rating and operate over a temperature range of -60°C to 135°C. These hole plugs are UL certified for outdoor applications.

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.	Product Type	Product	Type	Material	Color	Packaging
Conduit Fittings & Accessories KOS-LT 500 3830 Heyco 1: S/4.28 4,704In Stock 6,000Expected 10/21/2026	Mfr. Part # 3830 Mouser Part # 836-3830	Heyco	Conduit Fittings & Accessories KOS-LT 500 Learn More about Heyco tpe hole plugs	Datasheet	4,704In Stock 6,000Expected 10/21/2026	S/4.28 S/4.01 S/3.64 S/3.40 View S/3.18 S/2.91 S/2.72 S/2.54	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Liquid Tight Hole Plug	Thermoplastic Vulcanizate (TPV)	Black
Conduit Fittings & Accessories KOS-LT 1000 3832 Heyco 1: S/4.20 2,400In Stock 7,972Expected 10/15/2026	Mfr. Part # 3832 Mouser Part # 836-3832	Heyco	Conduit Fittings & Accessories KOS-LT 1000 Learn More about Heyco tpe hole plugs	Datasheet	2,400In Stock 7,972Expected 10/15/2026	S/4.20 S/3.77 S/3.52 S/3.35 View S/3.18 S/2.98 S/2.83 S/2.77	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Liquid Tight Hole Plug	Thermoplastic Vulcanizate (TPV)	Black
Conduit Fittings & Accessories KOS-LT 1/2 3833 Heyco 1: S/4.79 2,856In Stock 10,000Expected 11/4/2026	Mfr. Part # 3833 Mouser Part # 836-3833	Heyco	Conduit Fittings & Accessories KOS-LT 1/2 Learn More about Heyco tpe hole plugs	Datasheet	2,856In Stock 10,000Expected 11/4/2026	S/4.79 S/4.09 S/3.81 S/3.63 View S/3.46 S/3.24 S/3.08 S/2.93 S/2.75	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Liquid Tight Hole Plug	Thermoplastic Vulcanizate (TPV)	Black
Conduit Fittings & Accessories KOS-LT 625 BLACK 3834 Heyco 1: S/4.32 2,842In Stock	Mfr. Part # 3834 Mouser Part # 836-3834	Heyco	Conduit Fittings & Accessories KOS-LT 625 BLACK Learn More about Heyco tpe hole plugs	Datasheet	2,842In Stock	S/4.32 S/4.05 S/3.68 S/3.44 View S/3.22 S/2.94 S/2.75 S/2.57	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Liquid Tight Hole Plug	Thermoplastic Vulcanizate (TPV)	Black
Conduit Fittings & Accessories KOS-LT 3/4 3835 Heyco 1: S/4.67 2,388In Stock	Mfr. Part # 3835 Mouser Part # 836-3835	Heyco	Conduit Fittings & Accessories KOS-LT 3/4 Learn More about Heyco tpe hole plugs	Datasheet	2,388In Stock	S/4.67 S/4.36 S/3.97 S/3.71 View S/3.47 S/3.17 S/2.96 S/2.77	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Liquid Tight Hole Plug	Thermoplastic Vulcanizate (TPV)	Black	Bulk
Conduit Fittings & Accessories KOS-LT 1 BLACK 3837 Heyco 1: S/5.72 8,701In Stock	Mfr. Part # 3837 Mouser Part # 836-3837	Heyco	Conduit Fittings & Accessories KOS-LT 1 BLACK Learn More about Heyco tpe hole plugs	Datasheet	8,701In Stock	S/5.72 S/5.37 S/4.90 S/4.59 View S/4.28 S/3.93 S/3.65 S/3.41	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Liquid Tight Hole Plug	Thermoplastic Vulcanizate (TPV)	Black
Conduit Fittings & Accessories KOS-LT 750 3831 Heyco 1: S/4.32 2,001In Stock	Mfr. Part # 3831 Mouser Part # 836-3831	Heyco	Conduit Fittings & Accessories KOS-LT 750 Learn More about Heyco tpe hole plugs	Datasheet	2,001In Stock	S/4.32 S/4.05 S/3.68 S/3.44 View S/3.22 S/2.94 S/2.75 S/2.57	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Liquid Tight Hole Plug	Thermoplastic Vulcanizate (TPV)	Black

Heyco® TPE Liquid Tight Hole Plugs

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