Plumbers' Tape | McMaster-Carr

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89 Products

About Sealants

Select a sealant that can stretch, contract, and expand enough for your joints.

Thread Sealant Tape

Made of PTFE, this tape has a slippery surface that keeps threads from binding to make parts easy to assemble.

ePTFE with Graphite—ePTFE tape with graphite creates a better seal between threads than plain PTFE tape, which helps prevent fluid and gas leaks. The graphite attaches to the PTFE, so this tape does not emit harmful VOCs.

				Max. Pressure, psi
	Wd.	Lg., yd.	Density, g/cm³	For Fluids	For Gases	Temp. Range, ° F	For Max. Thread Dia.	Food Industry Std.	Certification	Mil. Spec.	Color		Each
PTFE







				0.0032" Thick

				1/4"	14	0.7	10,000	10,000	-450 to 550	1/2"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K11	00000


				3/8"	14	0.7	10,000	10,000	-450 to 550	3/4"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K18	0000
				1/2"	14	0.7	10,000	10,000	-450 to 550	1"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K12	0000
				3/4"	14	0.7	10,000	10,000	-450 to 550	1 1/2"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K13	0000
				1"	14	0.7	10,000	10,000	-450 to 550	2"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K14	0000
				1 1/2"	14	0.7	10,000	10,000	-450 to 550	3"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K15	0000
				2"	14	0.7	10,000	10,000	-450 to 550	4"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K16	00000




						0.0035" Thick

						1/2"	39	0.8	10,000	10,000	-450 to 500	2"	—	C-UL Listed UL Listed	—	Blue	4934A15	0000


						3/4"	39	0.8	10,000	10,000	-450 to 500	2"	—	C-UL Listed UL Listed	—	Blue	4934A16	0000
						1"	39	0.8	10,000	10,000	-450 to 500	2"	—	C-UL Listed UL Listed	—	Blue	4934A17	00000
						2"	39	0.8	10,000	10,000	-450 to 500	2"	—	C-UL Listed UL Listed	—	Blue	4934A18	00000


						ePTFE with Graphite







										0.0020" Thick

										5/8"	27	0.8	2,900	2,900	-400 to 500	1 1/4"	—	—	—	Gray	6802K25	00000

High-Density Thread Sealant Tape

This tape has a higher density than standard tape for a better seal between threads. Made of PTFE, it has a slippery surface that keeps threads from binding to make parts easy to assemble.

				Max. Pressure, psi									Each
	Wd.	Lg., yd.	Density, g/cm³	For Fluids	For Gases	Temp. Range, ° F	For Max. Thread Dia.	Food Industry Std.	Certification	Mil. Spec.	Color		1-11	12-Up
PTFE







				0.0032" Thick

				1/4"	14	1.2	10,000	10,000	-450 to 550	1/2"	—	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Gray	7346A11	00000	00000


				1/4"	14	1.2	10,000	10,000	-450 to 550	1/2"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K22	0000	0000
				3/8"	14	1.2	10,000	10,000	-450 to 550	3/4"	—	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Gray	7346A16	0000	0000
				3/8"	14	1.2	10,000	10,000	-450 to 550	3/4"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K19	0000	0000
				1/2"	14	1.2	10,000	10,000	-450 to 550	1"	—	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Gray	7346A12	0000	0000
				1/2"	14	1.2	10,000	10,000	-450 to 550	1"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K33	0000	0000
				3/4"	14	1.2	10,000	10,000	-450 to 550	1 1/2"	—	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Gray	7346A13	0000	0000
				3/4"	14	1.2	10,000	10,000	-450 to 550	1 1/2"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K44	0000	0000
				1"	14	1.2	10,000	10,000	-450 to 550	2"	—	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Gray	7346A14	0000	0000
				1"	14	1.2	10,000	10,000	-450 to 550	2"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K55	00000	0000
				1 1/2"	14	1.2	10,000	10,000	-450 to 550	3"	—	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Gray	7346A15	00000	00000


				1 1/2"	14	1.2	10,000	10,000	-450 to 550	3"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K66	00000	00000
				2"	14	1.2	10,000	10,000	-450 to 550	4"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K77	00000	00000




						0.0035" Thick

						1/4"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K81	00000	0000


						3/8"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K82	00000	00000
						1/2"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K83	00000	00000
						3/4"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K84	00000	00000
						1"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K85	00000	00000
						1 1/2"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K86	00000	00000
						2"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K87	00000	00000


						Nickel-Filled PTFE







										0.0035" Thick

										1/4"	14	1.4	10,000	10,000	-450 to 550	1/2"	—	C-UL Listed UL Listed	—	Gray	7346A211	00000	00000


										3/8"	14	1.4	10,000	10,000	-450 to 550	3/4"	—	C-UL Listed UL Listed	—	Gray	7346A212	00000	00000
										1/2"	14	1.4	10,000	10,000	-450 to 550	1"	—	C-UL Listed UL Listed	—	Gray	7346A213	00000	00000
										3/4"	14	1.4	10,000	10,000	-450 to 550	1 1/2"	—	C-UL Listed UL Listed	—	Gray	7346A214	00000	00000
										1"	14	1.4	10,000	10,000	-450 to 550	2"	—	C-UL Listed UL Listed	—	Gray	7346A215	00000	00000




0.0040" Thick

1/4"	14											1.9	10,500	11,500	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	UL Listed	—	White	6802K88	00000	00000


3/8"	14											1.9	10,500	11,500	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	UL Listed	—	White	6802K89	00000	00000
1/2"	14	1.9										10,500	11,500	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	UL Listed	—	White	6802K91	00000	00000
3/4"	14	1.9	10,500									11,500	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	UL Listed	—	White	6802K92	00000	00000
1"	14	1.9	10,500									11,500	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	UL Listed	—	White	6802K93	00000	00000
2"	14	1.9	10,500									11,500	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	UL Listed	—	White	6802K95	00000	00000

Cut-to-Size Strap-Mount Loop Pipe Hangers


Perforated	Solid

Cut the length of strap you need to hang duct, pipe, and other lines. Wrap these flexible hangers around pipe and round duct of any size.

Perforated—Come with mounting holes, so you don't need to drill. Large and small holes are alternately spaced.

Solid—Straps are not perforated so you can drill mounting holes at the size you need.

Galvanized Steel—These clamps won't rust in wet and outdoor environments, but they'll corrode when exposed to salt water and chemicals.

Copper-Plated Steel—Won't corrode when used with copper tubing.

304 Stainless Steel—Withstand mild chemicals and solvents and won't rust in wet environments.

				10 ft. Long		100 ft. Long
	For Pipe Size	Ga.	Mounting Hole Dia.		Each		Each
Perforated







				Galvanized Steel

				1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6	24	1/8", 1/4"	3051T11	00000	3051T12	000000


				1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6	20	1/8", 1/4"	3051T13	0000	3051T14	00000




						Copper-Plated Steel

						1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6	24	3/16", 1/4"	3051T15	0000	3051T16	00000




								304 Stainless Steel

								1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6	24	3/16", 1/4"	3051T21	00000	3051T22	000000


								1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6	20	3/16", 1/4"	3051T23	00000	3051T24	000000


								Solid







												Galvanized Steel

												1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6	24	—	3051T25	0000	3051T26	00000


												1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6	20	—	3051T27	00000	3051T28	00000




														304 Stainless Steel

														1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6	24	—	3051T31	00000	3051T32	000000


														1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6	20	—	3051T33	00000	3051T34	000000

Choose-a-Color High-Density Thread Sealant Tape

Use color to identify water, gas, and chemical connections. This tape has a higher density than standard tape for a better seal between threads. Made of PTFE, it has a slippery surface that keeps threads from binding to make parts easy to assemble.

Green—Green tape is often used for oxygen.

Orange and Yellow—Orange and yellow tape is commonly used to indicate fuel and gas.

Red—Red tape is often used for water.

				Max. Pressure, psi								Each
	Wd.	Lg., yd.	Density, g/cm³	For Fluids	For Gases	Temp. Range, ° F	For Max. Thread Dia.	Certification	Mil. Spec.	Choose a Color		1-11	12-Up
PTFE







				0.0032" Thick

				1/4"	14	1.2	10,000	10,000	-450 to 550	1/2"	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K11	00000	00000


				3/8"	14	1.2	10,000	10,000	-450 to 550	3/4"	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K17	0000	0000
				1/2"	14	1.2	10,000	10,000	-450 to 550	1"	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K12	0000	0000
				3/4"	14	1.2	10,000	10,000	-450 to 550	1 1/2"	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K13	0000	0000
				1"	14	1.2	10,000	10,000	-450 to 550	2"	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K14	00000	0000
				1 1/2"	14	1.2	10,000	10,000	-450 to 550	3"	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K15	00000	00000
				2"	14	1.2	10,000	10,000	-450 to 550	4"	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K16	00000	00000

Thread Sealant Tape for Stainless Steel Threads

This tape is thicker to prevent seizing and galling associated with stainless steel threaded connections. It’s also good for use with other metals. This tape has a higher density than standard tape for a better seal between threads. Made of PTFE, it has a slippery surface that keeps threads from binding to make parts easy to assemble.

				Max. Pressure, psi								Each
	Wd.	Lg., ft.	Density, g/cm³	For Fluids	For Gases	Temp. Range, ° F	For Max. Thread Dia.	Certification	Mil. Spec.	Color		1-11	12-Up
PTFE







				0.0043" Thick

				1/4"	43	1.05	10,000	10,000	-450 to 550	1 1/2"	Mil. Spec. UL Listed	MIL-T-27730	Gray	1726N11	00000	00000


				3/8"	43	1.05	10,000	10,000	-450 to 550	1 1/2"	Mil. Spec. UL Listed	MIL-T-27730	Gray	1726N12	0000	0000
				1/2"	21	1.05	10,000	10,000	-450 to 550	1 1/2"	Mil. Spec. UL Listed	MIL-T-27730	Gray	1726N17	0000	0000
				1/2"	50	1.05	10,000	10,000	-450 to 550	1 1/2"	Mil. Spec. UL Listed	MIL-T-27730	Gray	1726N13	00000	00000
				3/4"	21	1.05	10,000	10,000	-450 to 550	1 1/2"	Mil. Spec. UL Listed	MIL-T-27730	Gray	1726N14	0000	0000
				1"	21	1.05	10,000	10,000	-450 to 550	1 1/2"	Mil. Spec. UL Listed	MIL-T-27730	Gray	1726N18	0000	0000
				1"	43	1.05	10,000	10,000	-450 to 550	1 1/2"	Mil. Spec. UL Listed	MIL-T-27730	Gray	1726N15	00000	00000
				1 1/2"	43	1.05	10,000	10,000	-450 to 550	1 1/2"	Mil. Spec. UL Listed	MIL-T-27730	Gray	1726N16	00000	00000

Self-Fusing Rubber Sealing Tape

Image of Product. Front orientation. Repair and Duct Tape. Self-Fusing, Sealing.

Bonds to itself for a permanent, watertight seal. This tape has no adhesive, so it won't dry out and crack, which can cause standard tape to fail over time. The rubber backing molds to irregular surfaces and withstands demanding conditions, making this tape a good choice for patching and sealing anything from roofs to pipes.

Silicone Rubber—Your best choice to repair pipe, this tape withstands harsh chemicals and the widest temperature range. However, it breaks down when exposed to oil, grease, or fuel.

					Max. Pressure, psi
	Wd.	Lg., ft.	Temp. Range, ° F	Tensile Strength, psi	For Fluids	For Gases	Color	Flammability Rating		Each
Silicone Rubber



		1"	12	-130 to 500	1,200	150	150	Blue	UL 94 V-0	5496N11	000000


		2"	12	-130 to 500	1,200	150	150	Blue	UL 94 V-0	5496N12	00000

Hard-Set Fiberglass Tape for Pipe Repairing

Wrap around leaking pipe and hose in hard-to-reach areas where you need a permanent repair. Activated with water, this tape has a resin facing that sets rock hard in 30 minutes, even when completely submerged.

			Material
Wd.	Lg., ft.	Overall Thk.	Adhesive	Facing	Temp. Range, ° F	Tensile Strength	Max. Pressure, psi	Food Industry Std.	Includes	Color		Each
1"	2 1/2	0.014"	Polyurethane Rubber	Resin	45 to 600	Not Rated	150	NSF/ANSI 61	Plastic Gloves	Off-White	74635A12	000000
2"	4	0.015"	Polyurethane Rubber	Resin	0 to 400	Not Rated	500	—	Epoxy Putty Stick, Plastic Gloves	White	74635A13	00000
2"	5	0.014"	Polyurethane Rubber	Resin	45 to 600	Not Rated	150	NSF/ANSI 61	Plastic Gloves	Off-White	74635A65	00000
3"	9	0.014"	Polyurethane Rubber	Resin	45 to 600	Not Rated	150	NSF/ANSI 61	Plastic Gloves	Off-White	74635A66	00000
4"	15	0.014"	Polyurethane Rubber	Resin	45 to 600	Not Rated	150	NSF/ANSI 61	Plastic Gloves	Off-White	74635A67	00000

Thread Sealant Tape for Copper, Brass, and Bronze Threads

With 10% copper flake content, this tape matches the color of copper, brass, and bronze threads for a seamless finish. It’s made of PTFE, so it has a slippery surface to keep threads from binding. This tape has a higher density than standard tape for a better seal between threads.

				Max. Pressure, psi
	Wd.	Lg., ft.	Density, g/cm³	For Fluids	For Gases	Temp. Range, ° F	For Max. Thread Dia.	Certification	Mil. Spec.	Color		Each
Copper-Filled PTFE







				0.0045" Thick

				1/2"	50	1.6	10,000	300	-450 to 500	1 1/2"	Mil. Spec.	MIL-T-27730	Copper	4840N11	000000


				3/4"	50	1.6	10,000	300	-450 to 500	4"	Mil. Spec.	MIL-T-27730	Copper	4840N12	00000

Hook-Mount Loop Pipe Hangers

Temporarily hang pipe and tubing at worksites. You can also install these pipe hangers in places where welding and fastening aren't possible. Slide material through the strap, then adjust the D-rings to change the strap's hanging height.

		Hook			Strap				3 ft. Long Strap		6 ft. Long Strap
For Pipe Size	Wt. Cap., lb.	Opening Wd.	Ht.	Material	Wd.	Thick.	Material	Color		Each		Each
1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6	140	3/4"	2 3/4"	Galvanized Steel	1 1/2"	1/16"	Polypropylene Plastic	Orange	2867N11	00000	2867N12	00000

Dissolvable Welding Purge Tape for Pipes

Image of Product. Front orientation. Welding Purge Tape.

Create dams in pipes before welding, then wash away with water or steam. This tape leaves no residue behind.

Wd.	Lg., ft.	Overall Thk.	Material	Adhesive Material	Temp. Range, ° F	Tensile Strength, lbf/in. wd.	Adhesion to Steel	Color		Each
1"	300	0.0062"	Paper	Acrylic Plastic	20 to 150	20	Not Rated	White	7581A3	000000
2"	300	0.0062"	Paper	Acrylic Plastic	20 to 150	20	Not Rated	White	7581A5	000000