Plugs for Salt Water | McMaster-Carr

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	Type Type

	Pipe Size Pipe Size

1/8
1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
4
6
8

	Thread Type Thread Type

NPT

	Material Material

	Drive Style Drive Style

	External Hex
	External Square
	External Octagon

	Connection Style Connection Style

	For Pipe Material For Pipe Material

Plastic

Fiberglass

	Shape Shape

	Cap/Plug

	Schedule Schedule

	80

	For Use With For Use With	Show

Salt Water

	For Use With For Use With	Hide

Warning: Products have one, but not necessarily all, of the selected characteristics.

Alcohol-Based Solvents

Methyl Ethyl Ketone (MEK)

Wire, Cable, and Cords

Xylene

	Color Color

	Black
	Light Gray
	White

	For Pipe Schedule For Pipe Schedule

	80

	Connection Type Connection Type

	Pipe

	System of Measurement System of Measurement

Inch

	Length Length

	Gender Gender

Male

Female

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

RoHS Compliant

	Maximum Pressure Maximum Pressure

	Maximum Temperature Maximum Temperature

100° to 249° F

500° to 999° F

	Minimum Temperature Minimum Temperature

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

DFARS Specialty Metals
COTS-Exempt

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

REACH Compliant

	Drive Size Drive Size

	Specifications Met Specifications Met

147 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

Titanium Threaded Pipe Fittings

Titanium has similar strength to steel, but is approximately 40% lighter. It has better corrosion resistance than most stainless steel alloys and can handle corrosive substances, such as salt water and acids.

CPVC Pipe Fittings for Hot Water

Connect to CPVC pipe for use in high-temperature plumbing and water supply applications up to 200° F.

CPVC Pipe Flanges for Hot Water

Bolt two same-size flanges together with a gasket to create an access point within a line. They are also known as Pressure Class 150 flanges. Use in high-temperature plumbing and water supply applications up to 200° F.

UV-Resistant Polypropylene Pipe Fittings for Chemicals

Made of polypropylene, these fittings won’t deteriorate when exposed to the damaging effects of ultraviolet light and are suitable to use outdoors. They have the chemical resistance to withstand acids, solvents, and other harsh substances.

UV-Resistant Polypropylene Pipe Flanges for Chemicals

Use these polypropylene flanges in outdoor environments—they resist the damaging effects of ultraviolet light. They have the chemical resistance to stand up to acids, solvents, and other harsh substances. Bolt two same-size flanges together with a gasket to create an access point within a line. Flanges are also known as Pressure Class 150 flanges.

Easy-Access UV-Resistant Polypropylene
Pipe Fittings for Chemicals

Also known as manifold flange fittings, these have a clamp-together design that lets you access your line for routine maintenance. Fittings resist acids, solvents, and other harsh chemicals. They won’t deteriorate when exposed to the damaging effects of ultraviolet light, so they’re suitable for outdoor use.

Crack-Resistant PFA Pipe Fittings for Chemicals

Not only do these PFA fittings have the chemical resistance to handle acid and salt water, they also have better crack resistance than other plastic pipe fittings for chemicals. They are commonly used in high-purity chemical flow processes, such as semiconductor and clean room applications.

Fiberglass Pipe Flanges for Corrosive Chemicals

Flanges have excellent corrosion resistance to handle a wide range of acids and other highly-corrosive chemicals. Use in metal surface treating applications, plating solution lines, and other chemical process applications. They are reinforced with fiberglass layers for better strength and durability than any of our other pipe flanges for chemicals. Bolt two same-size flanges together with a gasket to create an access point within a line.

Sights for Quick-Clamp Sanitary Tube Fittings

Monitor food, brewery, chemical, pharmaceutical, and biotech processing lines with these sights that attach to quick-clamp fittings for fast installation and easy removal for cleaning.

Compact Screw-Plug Immersion Heaters for Water

Efficiently heat liquid in small containers.

Corrosion-Inhibiting Rods and Pads

Also known as sacrificial anodes, these rods and pads protect tanks, water heaters, and heat exchangers from rusting by attracting corrosion that would otherwise damage equipment.