These popular HEYCO® Hole Plugs Lab Kits are perfect for product design departments, experimental labs and all prototype work.

HEYCO® Heat Stabilized Nylon Dome Hole Plugs are molded from a Halogen-free, non-toxic nylon material which will not burn or produce toxic gases in the event of a fire. They are UV resistant, and self-extinguishing. Their convex, matte finish head tapers to a thin edge, and they are used to close unneeded panel holes.

Liquid Tight Threaded Plugs seal openings and protect against contamination. They provide a good fit for hydraulic and pneumatic applications.

Nylon Knockout Seals effectively plug electrical knock-outs. They are molded from 6/6 Nylon, in a gray color to resemble galvanized steel. They come in 6 trade sizes to fit 1/2" to 2" knock-out holes. (Notes: Locking fingers in fractional increments up to the maximum panel thickness.)

Nylon Knockout Seals for Thicker Panels plug electrical knockouts. They are molded in gray color to resemble galvanized steel, and come in 6 trade sizes fit 1/2" to 2" knockout holes for panels up to 1/4" thick.

These nylon Threaded Hole Plugs with Slotted Heads can be driven with a flat-head screwdriver making them easy to install and remove.

Our Transparent Plastic Dome Plugs are molded of transparent ABS or crystal clear Lexan, making them perfect for applications requiring visibility into the chassis.

Plate Seals protect against chafing and abrasion while sealing out fumes, heat, dust moisture and other contaminants. Used to manage and support cables, hoses, hydraulic, fuel and oil lines, as they are routed through bulkheads and openings and isolate from sharp edges. Typically mounts with screws and rivets or with adhesives, by special order. Available in standard off the shelf (COTS) and custom trim rings to fit myriad of applications.