Liquid Tight Break-Thru Plugs come in six sizes in the standard black color. These co-molded nylon and elastomer parts provide liquid tight closure when used as a plug. When pierced, Liquid Tight Break-Thru Plugs function as a liquid tight bushing that converts raw edged holes to smooth, neat, insulated holes. They mechanically protect electrical and telecommunications cables, tubing, hoses, ropes and utility lines.
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Item #

Item Name

Mounting Hole Diameter

Overall Height

Head Diameter

20301279-AP03 N/A HEYCO® 0.5 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 0.5 in12.7 mm N/A 0.320 in8.1 mm N/A 0.92 in23.4 mm
20301280-AP03 N/A HEYCO® 0.625 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 0.625 in15.9 mm N/A 0.320 in8.1 mm N/A 1.03 in26.2 mm
20301281-AP03 N/A HEYCO® 0.75 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 0.75 in19.1 mm N/A 0.320 in8.1 mm N/A 1.15 in29.2 mm
20301282-AP03 N/A HEYCO® 0.875 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 0.875 in22.2 mm N/A 0.320 in8.1 mm N/A 1.28 in32.5 mm
20301283-AP03 N/A HEYCO® 1 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 1 in25.4 mm N/A 0.320 in8.1 mm N/A 1.43 in36.3 mm
20301284-AP03 N/A HEYCO® 1.093 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 1.093 in27.8 mm N/A 0.320 in8.1 mm N/A 1.53 in38.9 mm
20301331-AP03 N/A HEYCO® 0.5 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 0.5 in12.7 mm N/A 0.630 in15.90 mm N/A 0.92 in23.4 mm
20301332-AP03 N/A HEYCO® 0.625 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 0.625 in15.9 mm N/A 0.630 in15.90 mm N/A 1.03 in26.2 mm
20301333-AP03 N/A HEYCO® 0.75 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 0.75 in19.1 mm N/A 0.630 in15.90 mm N/A 1.15 in29.2 mm
20301334-AP03 N/A HEYCO® 0.875 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 0.875 in22.2 mm N/A 0.630 in15.90 mm N/A 1.28 in32.5 mm
20301335-AP03 N/A HEYCO® 1 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 1 in25.4 mm N/A 0.630 in15.90 mm N/A 1.43 in36.3 mm
20301336-AP03 N/A HEYCO® 1.093 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 1.093 in27.8 mm N/A 0.630 in15.90 mm N/A 1.53 in38.9 mm
20301337-AP03 N/A HEYCO® 1.375 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 1.375 in34.9 mm N/A 0.670 in17.00 mm N/A 1.8 in45.7 mm
20301338-AP03 N/A HEYCO® 1.5 Inch (in) Mounting Hole Diameter Liquid Tight Break-Thru Plug N/A 1.5 in38.1 mm N/A 0.670 in17.00 mm N/A 1.93 in49 mm
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