2 3/8" Tubing | McMaster-Carr

Strong, hard walls give this tubing extra support in high-pressure and vacuum applications. It’s made of FDA listed materials, so it’s suitable for use with food and beverage. Free of plasticizers like DEHP, it won’t impart tastes or odors to the fluid passing through it.

PVC tubing has harder walls than polyethylene tubing and can handle higher pressures. It meets NSF/ANSI Standard 51 for food contact. Tubing is rigid and will not bend. It is clear, so you can easily monitor flow.

For technical drawings and 3-D models, click on a part number.

Clear PVC Plastic

Clear PVC Plastic Tubing

Clear

Rigid
Compatible with Socket Connect Tube Fittings
Hard (Durometer 80D)
Temperature Range: -40° to 140° F
Specifications Met: FDA Compliant 21 CFR 175.300, NSF/ANSI 51

ID	OD	Wall Thick.	Max. Pressure	Max. Vacuum	Color		1 ft.	3 ft.	6 ft.
2 3/8"	2 1/2"	1/16"	50 psi @ 72° F	28 in. of Hg @ 72° F	Clear	00000000	000000	000000	000000

High-Temperature Rigid Metal Duct Hose for Fumes

Rigid
Compatible Clamps: U-Bolt Clamps
Max. Temperature: Galvanized Steel: 550° F; Aluminum: 450° F; 304 and 316 Stainless Steel: 1000° F

Metal interlocked strips create a rigid, durable hose that stays strong under high temperatures. Hose is for use with smoke, welding fumes, and oil fumes.

Galvanized steel offers fair corrosion resistance.

Galvanized Steel
ID	OD	Bend Radius	Interior Surface Texture	Other Lengths, ft.		5 ft.	6 ft.	7 ft.	8 ft.	9 ft.	10 ft.	15 ft.	20 ft.	25 ft.
0.012" Material Thick.
2 3/8"	2 1/2"	8"	Ribbed	1 to 50	0000000	000000	000000	000000	000000	000000	000000	000000	000000	000000

Clear Scratch- and UV-Resistant Cast Acrylic Tubes

Color: Clear
Temperature Range: 0° to 150° F
Tensile Strength: 10,000-11,250 psi (Good)
Impact Strength: 0.3-0.4 ft.-lbs./in. (Poor)
Hardness: Rockwell M94-M100 (Hard)
For Use Outdoors: Yes
Specifications Met: See table

Fabricate containers, tanks, and lenses for light fixtures with these scratch- and UV-resistant cast acrylic tubes. Cast acrylic, which is comparable to Lucite and Plexiglas® Acrylic, is easier to machine than extruded acrylic. This material stands up to outdoor use better than polycarbonate and maintains clarity over time.

For technical drawings and 3-D models, click on a part number.

3/16" Wall Thick.
OD	OD Tolerance	ID	Lengths, ft.	Specifications Met		Per Ft.
2 3/4"	-0.020" to 0.020"	2 3/8"	1, 3, 5	ASTM D5436, FDA Compliant 21 CFR 177.1010, UL 94 HB	00000000	000000

Clear Impact-Resistant Polycarbonate Tubes

Color: Clear
Temperature Range: -40° to 200° F
Tensile Strength: 8,900-9,500 psi (Good)
Impact Strength: 12-18 ft.-lbs./in. (Excellent)
Hardness: Rockwell R118 (Hard)
For Use Outdoors: No

Comparable to Lexan, Hyzod, Tuffak, and Makrolon, these polycarbonate tubes are half the weight of glass and maintain excellent impact resistance across a wide temperature range. Use them to make instrument gauge covers and display racks.

For technical drawings and 3-D models, click on a part number.

Round Tubes

1/16" Wall Thick. (-0.0045" to 0.0055")
OD	OD Tolerance	ID	ID Tolerance	Specifications Met		1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	4 ft. Lg.	8 ft. Lg.
2 1/2"	-0.020" to 0.020"	2 3/8"	-0.020" to 0.020"	FDA Compliant 21 CFR 177.1580, UL 94 HB	0000000	00000	000000	000000	000000	000000

Flexible Rubber Foam Pipe Insulation

Soft and easy to install, this insulation restricts absorption of water, air, and gas. It is often used on cold and hot water lines and refrigeration lines. Seal with contact adhesive (sold separately). To use outdoors, coat in acrylic paint.

Slit tubes have an adhesive strip closure.

Unslit Tubes

Unslit Tube

Temperature Range: -295° to 220° F
Heat Flow Rate: 0.25 Btu @ 75° F
Density: 4.5 lbs./cu. ft.
Color: Black
Specifications Met: ASTM E84 25/50 for Flame and Smoke, ASTM C534

1/2" Wall Thick.
ID	For Pipe Size	Lg., ft.	Flexibility	R Value		Each
2 3/8"	2	6	Flexible	2	00000000	000000
3/4" Wall Thick.
2 3/8"	2	6	Flexible	3	00000000	00000

White Acrylic Coating (1-qt. Can)	00000000	Each	000000
Contact Adhesive (16-oz. Brush-Top Can)	00000000	Each	00000

Slit Tubes

Slit Tube

Temperature Range: -295° to 180° F
Heat Flow Rate: 0.25 Btu @ 75° F
Density: 4.5 lbs./cu. ft.
Color: Black
Specifications Met: ASTM E84 25/50 for Flame and Smoke, ASTM C534

1/2" Wall Thick.
ID	For Pipe Size	Lg., ft.	Flexibility	R Value		Each
2 3/8"	2	6	Flexible	2	00000000	000000
3/4" Wall Thick.
2 3/8"	2	6	Flexible	3	00000000	00000
1" Wall Thick.
2 3/8"	2	6	Flexible	4	00000000	00000

White Acrylic Coating (1-qt. Can)	00000000	Each	000000
Contact Adhesive (16-oz. Brush-Top Can)	00000000	Each	00000

90° Elbows

Elbow

Temperature Range: -295° to 220° F
Heat Flow Rate: 0.25 Btu @ 75° F
Density: 4.5 lbs./cu. ft.
Color: Black
Specifications Met: ASTM E84 25/50 for Flame and Smoke, ASTM C534

1/2" Wall Thick.
ID	For Pipe Size	Flexibility	Tube Style	R Value		Each
2 3/8"	2	Flexible	Slit	2	00000000	00000
3/4" Wall Thick.
2 3/8"	2	Flexible	Slit	3	00000000	00000
1" Wall Thick.
2 3/8"	2	Flexible	Slit	4	00000000	00000

White Acrylic Coating (1-qt. Can)	00000000	Each	000000
Contact Adhesive (16-oz. Brush-Top Can)	00000000	Each	00000

Tees

Tee

Temperature Range: -295° to 220° F
Heat Flow Rate: 0.25 Btu @ 75° F
Density: 4.5 lbs./cu. ft.
Color: Black
Specifications Met: ASTM E84 25/50 for Flame and Smoke, ASTM C534

1/2" Wall Thick.
ID	For Pipe Size	Flexibility	Tube Style	R Value		Each
2 3/8"	2	Flexible	Slit	2	000000000	00000
3/4" Wall Thick.
2 3/8"	2	Flexible	Slit	3	000000000	00000
1" Wall Thick.
2 3/8"	2	Flexible	Slit	4	000000000	00000

White Acrylic Coating (1-qt. Can)	00000000	Each	000000
Contact Adhesive (16-oz. Brush-Top Can)	00000000	Each	00000

Economical Flexible Polyethylene Foam Pipe Insulation

Less flexible than rubber foam, this insulation restricts absorption of water, air, and gas. It is typically used in plumbing applications. Seal with contact adhesive (sold separately). To use outdoors, coat in acrylic paint.

Slit tubes have an adhesive strip closure.

Unslit Tubes

Unslit Tube

Temperature Range: 0° to 180° F
Heat Flow Rate: 0.270 Btu @ 75° F
Density: 1.5 lbs./cu. ft.
Color: Black
Specifications Met: ASTM E84 25/50 for Flame and Smoke

1/2" Wall Thick.
ID	For Pipe Size	Lg., ft.	Flexibility	R Value		Each
2 3/8"	2	6	Flexible	2	00000000	00000
3/4" Wall Thick.
2 3/8"	2	6	Flexible	3	00000000	00000

Contact Adhesive (16-oz. Brush-Top Can)	00000000	Each	000000
White Acrylic Coating (1-qt. Can)	00000000	Each	00000

Slit Tubes

Slit Tube

Temperature Range: -295° to 200° F
Heat Flow Rate: 0.270 Btu @ 75° F
Density: 1.5 lbs./cu. ft.
Color: See table
Specifications Met: See table

3/8" Wall Thick.
ID	For Pipe Size	Lg., ft.	Flexibility	Specifications Met	R Value		Each
Black
2 3/8"	2	6	Flexible	ASTM E84 25/50 for Flame and Smoke, ASTM C1427 Type I	1.4	000000000	00000
1/2" Wall Thick.
Black
2 3/8"	2	6	Flexible	ASTM E84 25/50 for Flame and Smoke, ASTM C1427 Type I	2	000000000	00000
White
2 3/8"	2	6	Flexible	ASTM E84 25/50 for Flame and Smoke, ASTM C1427 Type I	2	000000000	00000
3/4" Wall Thick.
Black
2 3/8"	2	6	Flexible	ASTM E84 25/50 for Flame and Smoke, ASTM C1427 Type I	3	000000000	00000

Foam, Masonry, Metal, Plastic, Rubber	00000000	Each	000000
White Acrylic Coating (1-qt. Can)	00000000	Each	00000

Fiberglass Pipe Insulation

This common insulation material is typically used on hot and cold water lines and in process piping. To use outdoors, add metal jacketing.

Tubes, elbows, and tees are formed to provide the best fit on pipe and are the easiest to install. If your pipe is larger than the sizes we offer, choose a sheet/strip.

Tubes have an all-service jacket (ASJ) made of kraft paper with an adhesive strip closure. Seal with reinforced insulation tape (sold separately).

Elbows and tees with PVC jacketing seal using reinforced HVAC tape (sold separately).

Tubes with Kraft Paper Jacketing

Tube

Temperature Range: 0° to 850° F
Jacket Temperature Range: -20° to 150° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: 4.5 lbs./cu. ft.
Color: Yellow
Jacket Color: White
Specifications Met: ASTM E84 25/50 for Flame and Smoke, ASTM C547, ASTM C585

1/2" Wall Thick.
ID	For Pipe Size	Lg., ft.	Flexibility	R Value		Each
2 3/8"	2	3	Rigid	2.2	0000000	00000
1" Wall Thick.
2 3/8"	2	3	Rigid	4.3	0000000	00000
1 1/2" Wall Thick.
2 3/8"	2	3	Rigid	6.5	0000000	00000
2" Wall Thick.
2 3/8"	2	3	Rigid	8.7	0000000	00000
3" Wall Thick.
2 3/8"	2	3	Rigid	13	00000000	00000

Reinforced Insulation Tape (3" × 30 ft.)

00000000

Each

00000

90° Elbows

Elbow

Temperature Range: 0° to 1000° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: 5 lbs./cu. ft.
Color: Brown
Specifications Met: ASTM E84 25/50 for Flame and Smoke, ASTM C585

1" Wall Thick.
ID	For Pipe Size	Flexibility	R Value		Each
2 3/8"	2	Rigid	4.3	00000000	00000
1 1/2" Wall Thick.
2 3/8"	2	Rigid	6.5	00000000	00000
2" Wall Thick.
2 3/8"	2	Rigid	8.7	00000000	00000

90° Elbows with PVC Plastic Jacketing

Elbow

Temperature Range: 0° to 1000° F
Jacket Temperature Range: 0° to 150° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: 6 lbs./cu. ft.
Color: Red
Jacket Color: White
Specifications Met: ASTM E84 25/50 for Flame and Smoke

			1" Wall Thick.
ID	For Pipe Size	Flexibility	R Value		Each
2 3/8"	2	Rigid	4.3	00000000	000000

Reinforced HVAC Tape (3" × 30 ft.)

00000000

Each

00000

Tees

Tee

Temperature Range: 0° to 1000° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: 5 lbs./cu. ft.
Color: Brown
Specifications Met: ASTM E84 25/50 for Flame and Smoke, ASTM C585

1" Wall Thick.
ID	For Pipe Size	Flexibility	R Value		Each
2 3/8"	2	Rigid	4.3	00000000	000000
1 1/2" Wall Thick.
2 3/8"	2	Rigid	6.5	00000000	00000
2" Wall Thick.
2 3/8"	2	Rigid	8.7	00000000	00000

Tees with PVC Plastic Jacketing

Tee

Temperature Range: 0° to 1000° F
Jacket Temperature Range: 0° to 150° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: 6 lbs./cu. ft.
Color: Red
Jacket Color: White
Specifications Met: ASTM E84 25/50 for Flame and Smoke

			1" Wall Thick.
ID	For Pipe Size	Flexibility	R Value		Each
2 3/8"	2	Rigid	4.3	00000000	000000

Reinforced HVAC Tape (3" × 30 ft.)

00000000

Each

00000

Lightweight Melamine Foam Pipe Insulation

Temperature Range: -40° to 350° F
Jacket Temperature Range: -40° to 240° F
Heat Flow Rate: 0.25 Btu @ 75° F
Density: 0.5 lbs./cu. ft.
Color: Gray
Jacket Color: White
Specifications Met: ASTM E84 25/50 for Flame and Smoke

Melamine has a lightweight construction that allows quick and easy installation. Use on cold and hot water piping and with refrigeration systems. Insulation has an all-service jacket (ASJ) made of kraft paper with an adhesive strip closure. Seal seams with silicone sealant and join lengths with tape (both sold separately).

				1" Wall Thick.
ID	For Pipe Size	Lg., ft.	Flexibility	R Value		Each
Tubes with Kraft Paper Jacketing
2 3/8"	2	4	Rigid	4	00000000	000000

Silicone Sealant (10.1-oz. Cartridge)	0000000	Each	00000
Tape (2" × 108 ft.)	00000000	Each	00000

Chemical-Resistant Cellular Glass Pipe Insulation

Very rigid with a 0% water absorption rate, this insulation is unaffected by corrosive environments, organic solvents, and most acids. It is typically used in chemical-processing systems and underground lines. Insulation is flame resistant, meeting ASTM E84 0/0 for flame and smoke. Seal with tape (sold separately). Outdoor and underground use require metal jacketing (sold separately).

Tubes have a kraft paper jacket with an adhesive strip for sealing.

Tubes with Kraft Paper Jacketing

Tube

Temperature Range: -450° to 900° F
Jacket Temperature Range: -40° to 240° F
Heat Flow Rate: 0.29 Btu @ 75° F
Density: 7.5 lbs./cu. ft.
Color: Black
Jacket Color: White
Specifications Met: ASTM C522 Grade 6, ASTM E84 0/0 for Flame and Smoke

1" Wall Thick.
ID	For Pipe Size	Lg., ft.	Flexibility	R Value		Each
2 3/8"	2	2	Rigid	3.4	0000000	000000
2" Wall Thick.
2 3/8"	2	2	Rigid	6.9	0000000	00000

Underground Jacketing (24" × 5 ft.)	000000000	Each	000000
Joint Sealing Tape (4" × 10 ft.)	000000000	Each	00000

90° Elbows

Elbow

Temperature Range: -450° to 900° F
Heat Flow Rate: 0.29 Btu @ 75° F
Density: 7.5 lbs./cu. ft.
Color: Black
Specifications Met: ASTM C522 Grade 6, ASTM E84 0/0 for Flame and Smoke

1" Wall Thick.
ID	For Pipe Size	Flexibility	Choose a Pipe Fitting Connection Type	R Value		Each
2 3/8"	2	Rigid	Socket Weld, Threaded	3.4	0000000	000000
2" Wall Thick.
2 3/8"	2	Rigid	Socket Weld, Threaded	6.9	00000000	00000

Underground Jacketing (24" × 5 ft.)	000000000	Each	000000
Joint Sealing Tape (4" × 10 ft.)	000000000	Each	00000

Tees

Tee

Temperature Range: -450° to 900° F
Heat Flow Rate: 0.29 Btu @ 75° F
Density: 7.5 lbs./cu. ft.
Color: Black
Specifications Met: ASTM C522 Grade 6, ASTM E84 0/0 for Flame and Smoke

1" Wall Thick.
ID	For Pipe Size	Flexibility	Choose a Pipe Fitting Connection Type	R Value		Each
2 3/8"	2	Rigid	Socket Weld, Threaded	3.4	00000000	000000
2" Wall Thick.
2 3/8"	2	Rigid	Socket Weld, Threaded	6.9	00000000	00000

Underground Jacketing (24" × 5 ft.)	000000000	Each	000000
Joint Sealing Tape (4" × 10 ft.)	000000000	Each	00000

Clean Room Melamine Foam Pipe Insulation

Temperature Range: -40° to 350° F
Jacket Temperature Range: 0° to 140° F
Heat Flow Rate: 0.25 Btu @ 75° F
Density: 0.5 lbs./cu. ft.
Color: Gray
Jacket Color: White
Specifications Met: ASTM E84 25/50 for Flame and Smoke

These rigid, lightweight melamine foam tubes are wrapped in an ISO Class 5 (Class 100) clean room jacket that is suitable for sanitary and washdown applications. They’re typically used on cold and hot water piping and with refrigeration systems. The jacket has an adhesive strip closure. Seal seams with a silicone sealant and join lengths with tape (both sold separately).

					1" Wall Thick.
ID	For Pipe Size	Lg., ft.	Flexibility	Environmental Rating	R Value		Each
Tubes with PVC Plastic Jacketing
2 3/8"	2	4	Rigid	Fed. Std. Class 100, ISO Class 5	4	00000000	000000

Tape (2" × 108 ft.)	00000000	Each	000000
Silicone Sealant (10.1-oz. Cartridge)	0000000	Each	0000

Mineral Wool Pipe Insulation

Temperature Range: 0° to 1200° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: 8 lbs./cu. ft.
Color: Yellow
Specifications Met: ASTM E84 5/0 for Flame and Smoke, ASTM C547

Rigid and flame resistant, these insulation tubes meet ASTM E84 5/0 for flame and smoke. They are typically used in process piping and mechanical systems and perform best at temperatures up to 600° F. To use outdoors, add metal jacketing.

1" Wall Thick.
ID	For Pipe Size	Lg., ft.	Flexibility	R Value		Each
2 3/8"	2	3	Rigid	4.3	0000000	000000
1 1/2" Wall Thick.
2 3/8"	2	3	Rigid	6.5	0000000	00000
2" Wall Thick.
2 3/8"	2	3	Rigid	8.7	0000000	00000

Quick-Install Fiberglass Pipe Insulation

Hook-and-loop fasteners make it easy to install, remove, and reuse this flexible insulation. Use on steam, hot water, and process pipes and fittings.

Tubes

Tube

Temperature Range: 60° to 450° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: 1 lbs./cu. ft.
Color: Silver
Specifications Met: ASTM E84 25/50 for Flame and Smoke

				3/8" Wall Thick.
ID	For Pipe Size	Lg., ft.	Flexibility	R Value		Each
2 3/8"	2	20	Flexible	1.7	00000000	0000000

Tees

Tee

Temperature Range: 60° to 450° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: 1 lbs./cu. ft.
Color: Silver
Specifications Met: ASTM E84 25/50 for Flame and Smoke

			3/8" Wall Thick.
ID	For Pipe Size	Flexibility	R Value		Each
2 3/8"	2	Flexible	1.7	000000000	000000

45° Elbows

45° Elbow

Temperature Range: 60° to 450° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: 1 lbs./cu. ft.
Color: Silver
Specifications Met: ASTM E84 25/50 for Flame and Smoke

			3/8" Wall Thick.
ID	For Pipe Size	Flexibility	R Value		Each
2 3/8"	2	Flexible	1.7	000000000	000000

90° Elbows

90° Elbow

Temperature Range: 60° to 450° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: 1 lbs./cu. ft.
Color: Silver
Specifications Met: ASTM E84 25/50 for Flame and Smoke

			3/8" Wall Thick.
ID	For Pipe Size	Flexibility	R Value		Each
2 3/8"	2	Flexible	1.7	000000000	000000

Unions

Union

Temperature Range: 60° to 450° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: 1 lbs./cu. ft.
Color: Silver
Specifications Met: ASTM E84 25/50 for Flame and Smoke

			3/8" Wall Thick.
ID	For Pipe Size	Flexibility	R Value		Each
2 3/8"	2	Flexible	1.7	000000000	000000

Valves

Valve

Temperature Range: 60° to 450° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: 1 lbs./cu. ft.
Color: Silver
Specifications Met: ASTM E84 25/50 for Flame and Smoke

			3/8" Wall Thick.
ID	For Pipe Size	Flexibility	R Value		Each
2 3/8"	2	Flexible	1.7	000000000	000000

Ultra-Insulating Low-Temperature
Polyisocyanurate Foam Pipe Insulation

This very rigid insulation offers the lowest heat-flow rate of our pipe insulation and restricts absorption of water, air, and gas. It is typically used in process piping and chiller plants and performs best in applications below 50° F. To use outdoors, add metal jacketing.

Tubes have a kraft paper all-service jacket (ASJ) that resists mold and mildew by allowing moisture to evaporate. They have an adhesive strip closure.

Tubes with Kraft Paper Jacketing