Safety Caps | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	For OD For OD

	For Shape For Shape


Round	Square

Rectangle	Angle

Corner

	Color Color

	Black
	Red
	Orange
	White
	Yellow
	Blue
	Brown
	Clear
	Beige
	Dark Blue
	Green
	Pink
	Black/White
	Fluorescent Green
	Fluorescent Orange
	Fluorescent Yellow
	Gray
	Green/White
	Off-White
	Purple
	Red/White
	Silver

	Material Material

	Inside Height Inside Height

	Profile Profile


Straight	Tapered

	Cap Type Cap Type


Push On	Stretchable

	For ID For ID

	Plug Type Plug Type


Push In	Pull Through

Expandable	Screw In

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Maximum Temperature Maximum Temperature

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Flexibility Flexibility

Flexible

Rigid

	Thread Size Thread Size

	Height Height

	For Outside Width For Outside Width

	For Surface Type For Surface Type

Unthreaded

Threaded

	Specifications Met Specifications Met

D.O.T. Compliant 49 CFR
173.301

	Hardness Hardness

	Garment Garment

	Application Application

Clean Room

Cold Protection

Disposable

Electrical Protection

1,298 Products

Caps

Round Caps

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

Domed Round Caps

The large domed head extends beyond the diameter of your pipe, rod, or tubing for added protection.

Sure-Grip Round Caps

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

Tethered Round Caps

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

Roll-Resistant Round Caps

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

Hanging Round Caps

Slide these caps over a tool handle or other round object and use the eye to hang it.

Food Industry Round Caps

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

High-Temperature Round Caps

Good for electroplating, paint baking, and powder-coating applications, these caps withstand temperatures up to 440° F or 570° F.

Chemical-Resistant Round Caps

These caps have excellent chemical resistance for masking parts during chemical finishing applications such as plating and anodizing.

Square Caps

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

Rectangular Caps

Slide these flexible vinyl caps onto rectangular objects and they conform for a snug fit.

Angle Caps

Place these flexible vinyl caps over the ends of your angle iron and they conform for a snug fit.

High-Temperature Tapered Caps

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.

Corner Caps

Guard the corners of fragile materials such as glass and mirrors.

Flexible Pull-Tab Caps

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

High-Visibility Pull-Tab Caps

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.

Squeeze Top Caps

Squeeze the dome top to remove these caps. They're commonly used as thread protectors.

Stretchable Sealing Caps

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

Rebar Caps

Keep personnel safe from protruding rebar and pipe. Made of rigid plastic, these durable safety caps are bright orange or yellow for excellent visibility.

Stretchable Flange Caps

Stretch these caps over flared edges such as flanged tubing and valve handles.

USB Caps

Shield USB connectors from damage, contaminants, and moisture when they are not being used.

Capacitor Caps

Also known as capacitor boots, these caps protect capacitors and wire connections from damage to extend their service life. They also insulate wire terminal connections to help reduce accidental shocks.

Tapered Plugs

Expandable Tapered Plugs

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

Miniature Tapered Plugs

Sized to fit small openings, these tiny plugs fit snugly but can be removed easily using the flange. Their tapered design fits a range of hole diameters.

Tapered Plugs

Often used as laboratory stoppers, these rubber plugs have good impact and abrasion resistance. They’re tapered to fit a range of hole diameters.

High-Temperature Tapered Plugs

Good for electroplating, paint baking, and powder-coating applications, these plugs withstand temperatures up to 570° F. All are tapered to fit a range of hole diameters.

Expandable High-Temperature Tapered Plugs

Place a plug into an opening and tighten the wing nut—the sides expand to create a seal in holes of varying diameters. Good for paint baking and powder-coating applications, these plugs withstand temperatures up to 450° F.

Hollow High-Temperature Tapered Plugs

The hollow construction allows these plugs to compress for a snug fit in threaded and unthreaded holes of varying diameters. Good for electroplating, paint baking, and powder-coating applications, they withstand temperatures up to 450° F.

Miniature High-Temperature Tapered Plugs

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.

Chemical-Resistant Tapered Plugs

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.

Food Industry Tapered Plugs

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

Round Plugs

Sealing Plugs

With a compressible flanged top, these plugs are designed to seal the ends of copper tubing often used in water supply lines, refrigerant lines, and HVAC compressors. All are sized to fit standard copper tube dimensions.

Round Plugs

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

High-Temperature Round Plugs for NPT Pipe

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

Flanged Pull-Through Round Plugs

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.

High-Temperature Pull-Through Round Plugs

Good for electroplating, paint baking, and powder-coating applications, these plugs withstand temperatures up to 600° F. To form a tight seal, use the smaller end of the plug to pull the larger end into a through hole.

Chemical-Resistant Pull-Through Round Plugs

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.

Pull-Tab Round Plugs

A time-saving alternative to threaded plugs, these plugs press in place and have an ergonomic pull tab for quick and easy removal. Use them to temporarily protect holes in objects from contaminants during storage, painting, and light fabrication.

Miniature Pull-Through Round Plugs

Also known as mouse tails, these tiny plugs fit through-hole IDs as small as 0.022”, 0.025", or 0.03”.

Push-In Panel Plugs

Push these plugs into place for a finished appearance on both sides of a panel.

Fastening and Joining

Gas Tank Safety Caps

Protect the valve of high-pressure gas tanks.

Gas Tank Safety Collars

Use a collar to protect the valve of acetylene tanks.

Sanitary Low-Profile Cap Nuts

Certified by EHEDG (European Hygienic Engineering and Design Group) to meet sanitary design standards, these cap nuts fit into tight spaces to cover and seal exposed threads in your food processing facility.

Sanitary Thread Caps

Cover exposed threads with these caps to help prevent bacteria growth in food processing areas and other sanitary environments.

Personal Protective Equipment

Toe and Foot Guards

Shield toes and feet from accidental impact.

Shoe and Boot Protective Epoxy Coatings

Extend the life of your footwear with these abrasion- and water-resistant epoxies.

Bump Caps

Protect your head from minor bumps and scrapes.

Bump Cap Inserts for Baseball Caps

Convert a baseball cap into a bump cap to protect your head from minor bumps and scrapes.

Bump Caps with Face Shield Attachment

Protect your head from minor bumps and scrapes. Attach a lens to protect against dust and spray.

Heat-Resistant Hard Hats

Made from a material similar to that used in firefighters' helmets.

Hard Hats for Top and Side Impacts

For protection from more than just falling objects, these hard hats are rated ANSI/ISEA Z89.1, Type II to deflect both top and off-center blows to the head.

Hard Hats

Protect the top of your head from falling objects.

Hard Hats with Face Shield and Earmuffs

These hard hats give all-in-one head, face, and ear protection. Lift the face shield and earmuffs when not in use.

Hard Hats with Face Shield

The fully retractable face shield provides protection against dust and spray and fits over prescription glasses.

Hard-Hat Racks

Keep hard hats close at hand but out of the way.

Flame and Arc-Flash Cold-Protection Face Masks

These face masks are made of an aramid blend that meets NFPA 70E for protection against electrical arc flashes while keeping your head and neck warm.

Flame and Arc-Flash Cold-Protection Hats

These hats are made of an aramid blend that meets NFPA 70E for protection against electrical arc flashes while keeping you warm.

High-Visibility Hats

Wear these fluorescent hats to stand out in low-visibility areas and high-risk jobsites, such as vehicle roadways and construction sites.

Clean Room Hats and Hairnets

Also known as bouffants, these hats and hairnets keep hair contained to reduce contamination.

Disposable Hats and Hairnets

Keep your hair out of the way to prevent stray hairs from contaminating food.

Hard-Hat Cooling Pads

These pads are filled with water-absorbent cooling crystals to keep you cool all day.

Arc-Flash-Protection Equipment Kits

For protection from low-level arc flash hazards, these kits include several of the necessary safety items in a storage bag.

Arc-Flash-Protection Face Shields

Provide protection from low-level arc flash hazards when a full hood is not necessary.

Electrical

Caps for Outlets and Plugs

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

Caps for Washdown Plugs and Sockets

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

Caps for Safe-Break Pin-and-Sleeve Connectors

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

Caps for Hazardous Location
Safe-Break Pin-and-Sleeve Connectors

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

Caps for High-Current Pin-and-Sleeve Connectors

Protect high-current connectors when not in use.

Fuse Block Safety Covers

Prevent accidental shocks with these snap-on safety covers.

Hard-Hat Labels

Attach these labels to hard hats to provide safety reminders or to identify first-aid personnel.

Tweezer Tip Covers

Cap the tips of your tweezers to protect them from damage. These flexible silicone covers fit most styles of tweezers.

Caps

Round Caps

Domed Round Caps

Sure-Grip Round Caps

Tethered Round Caps

Roll-Resistant Round Caps

Hanging Round Caps

Food Industry Round Caps

High-Temperature Round Caps

Chemical-Resistant Round Caps

Square Caps

Rectangular Caps

Angle Caps

High-Temperature Tapered Caps

Corner Caps

Flexible Pull-Tab Caps

High-Visibility Pull-Tab Caps

Squeeze Top Caps