Place a plug into an opening and tighten the wing nut—the sides expand to create a seal in holes of varying diameters.

Keep hollow tapered plugs of various sizes on hand to solve whatever problems arise. The hollow construction allows these plugs to compress for a snug fit in threaded and unthreaded holes of varying diameters.

Lightweight and moisture resistant, these plugs are laboratory-grade 100% natural cork. They’re tapered to fit a range of hole diameters.

Often used on gas cylinders, these plugs cinch and lock tightly around valve heads to block the ports—they must be cut off making it clear if the cylinder has been tampered with. The plugs are tapered to fit a range of hole diameters.

These plugs have excellent chemical resistance for masking parts during chemical finishing applications such as plating and anodizing. Their tapered design fits a range of hole diameters.

Sized to fit small openings, these tiny plugs fit snugly but can be removed easily using the flange. They withstand temperatures up to 470° F, which makes them good for electroplating, paint baking, and powder-coating applications. All are tapered to fit a range of hole diameters.

Made of FDA listed materials, these plugs are suitable for food contact. They're tapered to fit a range of hole diameters.

Seal tube and hose fittings to keep their straight threads protected from contaminants during fabrication and storage.

Designed to fit into 37° flared connections such as those found on JIC and SAE fittings, these plugs protect internally threaded connections from contaminants during fabrication and storage.

These plugs withstand temperatures up to 600° F to protect internally threaded NPT connections from contaminants during electropainting, paint baking, and powder coating applications.

The hollow construction allows these plugs to compress for a snug fit in threaded and unthreaded holes.

With a surface resistivity of less than 10⁵ ohms, these plugs not only dissipate electrical charges, but can be used as an electrical shield.

Designed with a flange, these plugs protect countersunk holes during anodizing, electroplating, paint baking, and powder-coating applications. All withstand temperatures up to 600° F. Use the smaller end of the plug to pull the larger end into a through hole to form a tight seal.

These plugs have excellent chemical resistance for masking parts during chemical finishing applications such as plating and anodizing. Use the smaller end of the plug to pull the larger end into a through hole to form a tight seal.

Flexible ridges or straps hold these plugs in place.

More durable than plastic plugs, these provide the most protection from abrasion and impact. Use them to eliminate sharp edges and create a finished look on metal fence and machine-guard posts. Drive them in place with a hammer for a secure fit.

Flexible ridges securely hold these plugs in place and allow them to fit a range of hole sizes.

Tapered prongs or a snap-in ring securely hold these plugs in place.

Keep metal snap-in plugs of various sizes on hand to solve whatever problems arise. Made of steel, these plugs are our most durable plugs for panels. Their tapered prongs snap into holes to securely hold them in place.

The wings on these plugs expand against the sides of a hole to form a liquid-tight seal. Pierce the plugs with round wire, cable, or tubing and they function as a grommet to create insulated holes.

Vents in the top allow air circulation and permit heat and fumes to escape. All of these plugs have wings that expand against the sides of the hole to lock them in place.

Made of rigid plastic, these caps are more wear resistant than vinyl caps but not as flexible.

Commonly used on shipping tubes, these caps have a square head to prevent round objects from rolling during shipping and storage.

More durable than plastic caps, these provide the most protection from abrasion and impact.

The tethered design allows frequent access to the ends of pipe, tubing, and other round objects without ever misplacing the cap.

A long, textured pull tab provides a sure grip for quick removal even when wearing gloves.

Keep equipment safe from electrical currents with these caps that have a surface resistivity of less than 10¹² ohms.

Made of FDA listed materials, these caps are suitable for food contact.

Made of silicone, these caps withstand temperatures of 450° F for electroplating, paint-baking, and powder-coating applications. All of these flexible caps are tapered to fit a variety of unthreaded and threaded objects.

These flexible plastic caps are tapered to fit a variety of unthreaded and threaded objects.

Slide these flexible vinyl caps on and they conform for a snug fit.

Slide these flexible vinyl caps on and they conform for a snug fit. Pull the tab for easy removal.

Protect externally threaded components from contaminants during fabrication and storage.

A vibrant yellow color makes these caps stand out. They are made of flexible rubber that conforms for a snug fit. Pull the tab for easy removal.

Tug on the pull tabs to stretch these caps onto the tips of bottles, beakers, flasks, and cylinders, creating an airtight seal.

Stick these caps on the raised surfaces of flanges or other flat surfaces for extra protection during transport and storage.

Protect SAE hydraulic flanges during shipping, storing, and finishing applications.

Give open-ended standoffs a finished look and protect them from dirt and debris.

Protect harsh environment mini connectors when not in use.

Protect screw-together M12 connectors when not in use.

Caps are watertight to protect hazardous location safe-break plugs when not in use.

Caps are watertight to protect safe-break plugs when not in use.

Protect plugs and sockets in washdown environments when not in use.

Audio/video HDMI connectors and cords are rated IP67 when mated.

Cover unused electrical outlets or plug prongs to protect them from dust, dirt, liquids, and other contaminants.

Made of brass, these fittings have good corrosion resistance.

These fittings keep their strength in moist environments and meet NSF/ANSI 61 for drinking water. Also known as instant fittings.

Designed for use in welding applications, these fittings are flame retardant.

Use at pressures up to 150 psi.

Fittings have good corrosion resistance.

A single sleeve (ferrule) compresses the tubing as you tighten the nut on these fittings, creating a strong seal. They are brass for good corrosion resistance.

These brass couplings have good corrosion resistance.

Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. Use in applications up to 140 psi.

Fittings have a sleeve that bites into tubing as you tighten the nut to form a seal in applications up to 120 psi. Also known as flareless fittings.

Twist these fittings onto high-vacuum tubing to quickly make sealed, high-vacuum connections without the need for clamping, welding, or tools.

Also known as I-line fittings, these quick-clamp fittings permit easy access to your line.

The threads on the tube end of these fittings are Class 3A or 3B and adhere to tighter tolerances than other 37° flared fittings.

Polished to a 15 Ra and under finish, these fittings have a mirror smooth interior. They are also known as ultra-high-purity fittings.

Use these fittings at pressures up to 9,700 psi. Also known as instrumentation fittings, they are made to tight tolerances for use in high-precision applications. They are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings.

Polished to a 20 Ra finish, these fittings have an extra-smooth interior that prevents product buildup and inhibits bacteria growth.

Fittings are polished to a32 Ra and under finish on the interior.

Butt-weld fittings allow for a smooth, flush connection that provides maximum flow.

A PTFE seal on the tube end of these fittings allows for an extra-strong connection in high-vibration applications.

Crimp these fittings to copper tubing with a crimping tool for a leak-tight connection that doesn’t require heat or soldering. They are comparable to Viega ProPress fittings.

Choose these metal fittings when you need better durability than our plastic push-to-connect fittings.

Also known as instrumentation fittings, these are made to tighter tolerances than standard compression fittings. They are compatible with Parker CPI fittings.

A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal.

Thicker walls make these fittings—sometimes called flareless or bite fittings—withstand about twice as much pressure as standard compression fittings, so they’re good for hydraulic power applications.

Use these heavy duty, corrosion-resistant fittings in high-pressure flow applications.

Use these fittings in extreme-pressure conditions up to 15,000 psi.

Unlike other stainless steel fittings, these are made in the U.S.A. for superior quality. As another marker of quality, they come with a certificate with a traceable lot number and test report that guarantees material composition.

The male threads on these fittings have a sealant applied for extra leak protection.

Socket-connect fittings are easier to weld than butt-weld fittings because the fitting doesn't need to align perfectly to the pipe. Slip the pipe into the socket and weld.

Butt-weld fittings allow for a smooth, flush connection that provides maximum flow.

Press these fittings onto stainless steel pipe using a crimping tool for a permanent, leak-tight connection that's faster than threading or welding and doesn't require heat.

The strongest socket-connect fittings we offer, these heavy duty forged fittings are also known as Pressure Class 6000.