Pipe Insulation Elbows | McMaster-Carr

	Insulation Type Insulation Type


Elbow	Jacket

Tube

	For Pipe Size For Pipe Size

1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
5
6
8
10

	Wall Thickness Wall Thickness

	ID ID

	Material Material

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

	Color Color

	Black		Brown
	White		Red
	Peach		Silver

	Elbow Bend Elbow Bend

45°

90°

	Flexibility Flexibility

Flexible

Rigid

	Tube Style Tube Style

Slit

Unslit

	Specifications Met Specifications Met

ASTM E84 25/50 for Flame
and Smoke

ASTM E84 0/0 for Flame and
Smoke

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

DFARS Specialty Metals
COTS-Exempt

	For Pipe Insulation OD For Pipe Insulation OD

	OD OD

	R Value R Value

	Density Density

	Heat Flow Rate Heat Flow Rate

	Performance Properties Performance Properties

Moisture Resistant

Chemical Resistant

Flame Resistant

	For Copper Tube Size For Copper Tube Size

	For Pipe Fitting Connection Type For Pipe Fitting Connection Type

Socket Weld

Threaded

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219 Products

About Selecting Thermal Insulation

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.

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

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	For Copper Tube Size	Flexibility	R Value		Each
5/8"	3/8	1/2	Rigid	4.3	00000000	00000
7/8"	1/2	3/4	Rigid	4.3	00000000	0000
1 1/8"	3/4	1	Rigid	4.3	00000000	0000
1 3/8"	1	1 1/4	Rigid	4.3	00000000	0000
1 5/8"	1 1/4	1 1/2	Rigid	4.3	00000000	0000
1 7/8"	1 1/2	__	Rigid	4.3	00000000	0000
2 1/8"	__	2	Rigid	4.3	00000000	0000
2 3/8"	2	__	Rigid	4.3	00000000	00000
2 5/8"	__	2 1/2	Rigid	4.3	00000000	0000
2 7/8"	2 1/2	__	Rigid	4.3	00000000	00000
3 1/2"	__	__	Rigid	4.3	00000000	00000
4 1/2"	4	__	Rigid	4.3	00000000	00000
5 1/2"	5	__	Rigid	4.3	00000000	00000
6 5/8"	6	__	Rigid	4.3	00000000	00000
8 5/8"	8	__	Rigid	4.3	00000000	00000
10 3/4"	10	__	Rigid	4.3	00000000	00000
12 3/4"	__	__	Rigid	4.3	00000000	00000
1 1/2" Wall Thick.
5/8"	3/8	1/2	Rigid	6.5	00000000	00000
7/8"	1/2	3/4	Rigid	6.5	00000000	00000
1 1/8"	3/4	1	Rigid	6.5	00000000	00000
1 3/8"	1	1 1/4	Rigid	6.5	00000000	00000
1 5/8"	1 1/4	1 1/2	Rigid	6.5	00000000	00000
1 7/8"	1 1/2	__	Rigid	6.5	00000000	00000
2 1/8"	__	2	Rigid	6.5	00000000	00000
2 3/8"	2	__	Rigid	6.5	00000000	00000
2 5/8"	__	2 1/2	Rigid	6.5	00000000	00000
2 7/8"	2 1/2	__	Rigid	6.5	00000000	00000
3 1/2"	__	__	Rigid	6.5	00000000	00000
4 1/2"	4	__	Rigid	6.5	00000000	00000
5 1/2"	5	__	Rigid	6.5	00000000	00000
6 5/8"	6	__	Rigid	6.5	00000000	00000
8 5/8"	8	__	Rigid	6.5	00000000	00000
10 3/4"	10	__	Rigid	6.5	00000000	00000
12 3/4"	__	__	Rigid	6.5	00000000	000000
2" Wall Thick.
5/8"	3/8	1/2	Rigid	8.7	00000000	00000
7/8"	1/2	3/4	Rigid	8.7	00000000	00000
1 1/8"	3/4	1	Rigid	8.7	00000000	00000
1 3/8"	1	1 1/4	Rigid	8.7	00000000	00000
1 5/8"	1 1/4	1 1/2	Rigid	8.7	00000000	00000
1 7/8"	1 1/2	__	Rigid	8.7	00000000	00000
2 1/8"	__	2	Rigid	8.7	00000000	00000
2 3/8"	2	__	Rigid	8.7	00000000	00000
2 5/8"	__	2 1/2	Rigid	8.7	00000000	00000
2 7/8"	2 1/2	__	Rigid	8.7	00000000	00000
3 1/2"	__	__	Rigid	8.7	00000000	00000
4 1/2"	4	__	Rigid	8.7	00000000	00000
5 1/2"	5	__	Rigid	8.7	00000000	00000
6 5/8"	6	__	Rigid	8.7	00000000	00000
8 5/8"	8	__	Rigid	8.7	00000000	00000
10 3/4"	10	__	Rigid	8.7	00000000	000000
12 3/4"	__	__	Rigid	8.7	00000000	000000

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	For Copper Tube Size	Flexibility	R Value		Each
7/8"	1/2	3/4	Rigid	4.3	00000000	000000
1 1/8"	3/4	1	Rigid	4.3	00000000	00000
1 3/8"	1	1 1/4	Rigid	4.3	00000000	00000
1 5/8"	1 1/4	1 1/2	Rigid	4.3	00000000	00000
1 7/8"	1 1/2	__	Rigid	4.3	00000000	00000
2 3/8"	2	__	Rigid	4.3	00000000	00000

Reinforced HVAC Tape (3" × 30 ft.)

00000000

Each

00000

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.

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

3/8" Wall Thick.
ID	For Pipe Size	For Copper Tube Size	Flexibility	Tube Style	R Value		Each
5/8"	3/8	1/2	Flexible	Slit	1.5	00000000	00000
7/8"	1/2	3/4	Flexible	Slit	1.5	00000000	0000
1 1/8"	3/4	1	Flexible	Slit	1.5	00000000	0000
1 3/8"	1	1 1/4	Flexible	Slit	1.5	00000000	0000
1 5/8"	1 1/4	1 1/2	Flexible	Slit	1.5	00000000	0000
1 7/8"	1 1/2	__	Flexible	Slit	1.5	00000000	0000
2 1/8"	__	2	Flexible	Slit	1.5	00000000	0000
1/2" Wall Thick.
1/2"	1/4	3/8	Flexible	Unslit	2	00000000	0000
5/8"	3/8	1/2	Flexible	Slit	2	00000000	0000
3/4"	__	__	Flexible	Unslit	2	00000000	0000
7/8"	1/2	3/4	Flexible	Slit	2	00000000	0000
1 1/8"	3/4	1	Flexible	Slit	2	00000000	0000
1 3/8"	1	1 1/4	Flexible	Slit	2	00000000	0000
1 5/8"	1 1/4	1 1/2	Flexible	Slit	2	00000000	0000
1 7/8"	1 1/2	__	Flexible	Slit	2	00000000	0000
2 1/8"	__	2	Flexible	Slit	2	00000000	0000
2 3/8"	2	__	Flexible	Slit	2	00000000	0000
2 5/8"	__	2 1/2	Flexible	Slit	2	00000000	0000
2 7/8"	2 1/2	__	Flexible	Slit	2	00000000	0000
3 3/8"	__	__	Flexible	Slit	2	00000000	0000
3 5/8"	3	3 1/2	Flexible	Unslit	2	00000000	00000
4 1/8"	3 1/2	4	Flexible	Slit	2	00000000	00000
4 3/8"	__	__	Flexible	Slit	2	00000000	00000
3/4" Wall Thick.
1/2"	1/4	3/8	Flexible	Unslit	3	00000000	0000
5/8"	3/8	1/2	Flexible	Slit	3	00000000	0000
3/4"	__	__	Flexible	Unslit	3	00000000	0000
7/8"	1/2	3/4	Flexible	Slit	3	00000000	0000
1 1/8"	3/4	1	Flexible	Slit	3	00000000	0000
1 3/8"	1	1 1/4	Flexible	Slit	3	00000000	0000
1 5/8"	1 1/4	1 1/2	Flexible	Slit	3	00000000	0000
1 7/8"	1 1/2	__	Flexible	Slit	3	00000000	0000
2 1/8"	__	2	Flexible	Slit	3	00000000	00000
2 3/8"	2	__	Flexible	Slit	3	00000000	00000
2 5/8"	__	2 1/2	Flexible	Slit	3	00000000	0000
2 7/8"	2 1/2	__	Flexible	Slit	3	00000000	00000
3 1/8"	__	3	Flexible	Slit	3	00000000	00000
3 3/8"	__	__	Flexible	Slit	3	00000000	00000
3 5/8"	3	3 1/2	Flexible	Unslit	3	00000000	00000
4 1/8"	3 1/2	4	Flexible	Slit	3	00000000	00000
4 3/8"	__	__	Flexible	Slit	3	00000000	00000
1" Wall Thick.
1/2"	1/4	3/8	Flexible	Unslit	4	00000000	0000
5/8"	3/8	1/2	Flexible	Slit	4	00000000	0000
3/4"	__	__	Flexible	Unslit	4	00000000	0000
7/8"	1/2	3/4	Flexible	Slit	4	00000000	0000
1 1/8"	3/4	1	Flexible	Slit	4	00000000	0000
1 3/8"	1	1 1/4	Flexible	Slit	4	00000000	0000
1 5/8"	1 1/4	1 1/2	Flexible	Slit	4	00000000	0000
1 7/8"	1 1/2	__	Flexible	Slit	4	00000000	0000
2 1/8"	__	2	Flexible	Slit	4	00000000	00000
2 3/8"	2	__	Flexible	Slit	4	00000000	00000
2 5/8"	__	2 1/2	Flexible	Slit	4	00000000	00000
2 7/8"	2 1/2	__	Flexible	Slit	4	00000000	00000
3 1/8"	__	3	Flexible	Slit	4	00000000	00000
3 3/8"	__	__	Flexible	Slit	4	00000000	00000
3 5/8"	3	3 1/2	Flexible	Unslit	4	00000000	00000
4 1/8"	3 1/2	4	Flexible	Slit	4	00000000	00000
4 3/8"	__	__	Flexible	Slit	4	00000000	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.

90° Elbows

Elbow

Temperature Range: -330° to 210° F
Heat Flow Rate: 0.245 Btu @ 75° F
Density: 1.5 lbs./cu. ft.
Color: Black
Specifications Met: ASTM C1427 Type I, ASTM E84 25/50 for Flame and Smoke

					3/8" Wall Thick.			1/2" Wall Thick.
ID	For Pipe Size	For Copper Tube Size	Flexibility	Tube Style	R Value		Each	R Value		Each
5/8"	3/8	1/2	Flexible	Slit	1.5	0000000	00000	2	0000000	00000
7/8"	1/2	3/4	Flexible	Slit	1.5	0000000	0000	2	0000000	0000
1 1/8"	3/4	1	Flexible	Slit	1.5	0000000	0000	2	0000000	0000
1 3/8"	1	1 1/4	Flexible	Slit	1.5	0000000	0000	2	0000000	0000
1 5/8"	1 1/4	1 1/2	Flexible	Slit	1.5	0000000	0000	2	0000000	0000
1 7/8"	1 1/2	__	Flexible	Slit	1.5	0000000	0000	2	0000000	0000
2 1/8"	__	2	Flexible	Slit	1.5	0000000	0000	2	0000000	0000

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

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	For Copper Tube Size	Flexibility	Choose a Pipe Fitting Connection Type	R Value		Each
1 1/8"	3/4	1	Rigid	Socket Weld, Threaded	3.4	0000000	000000
1 3/8"	1	1 1/4	Rigid	Socket Weld, Threaded	3.4	0000000	00000
1 5/8"	1 1/4	1 1/2	Rigid	Socket Weld, Threaded	3.4	0000000	00000
1 7/8"	1 1/2	__	Rigid	Socket Weld, Threaded	3.4	0000000	00000
2 3/8"	2	__	Rigid	Socket Weld, Threaded	3.4	0000000	00000
1 1/2" Wall Thick.
5 5/8"	__	__	Rigid	Socket Weld, Threaded	5.2	0000000	00000
2" Wall Thick.
1 1/8"	3/4	1	Rigid	Socket Weld, Threaded	6.9	00000000	00000
1 3/8"	1	1 1/4	Rigid	Socket Weld, Threaded	6.9	00000000	00000
1 5/8"	1 1/4	1 1/2	Rigid	Socket Weld, Threaded	6.9	00000000	00000
1 7/8"	1 1/2	__	Rigid	Socket Weld, Threaded	6.9	00000000	00000
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

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.

90° Elbows

Elbow

Temperature Range: -295° to 300° F
Heat Flow Rate: 0.17 Btu @ 75° F
Density: 2 lbs./cu. ft.
Color: Peach
Specifications Met: ASTM E84 25/50 for Flame and Smoke

				1" Wall Thick.			2" Wall Thick.
ID	For Pipe Size	For Copper Tube Size	Flexibility	R Value		Each	R Value		Each
7/8"	1/2	3/4	Rigid	5.9	0000000	00000	11.8	00000000	000000
1 1/8"	3/4	1	Rigid	5.9	0000000	0000	11.8	00000000	00000
1 3/8"	1	1 1/4	Rigid	5.9	0000000	00000	11.8	00000000	00000
1 5/8"	1 1/4	1 1/2	Rigid	5.9	0000000	00000	11.8	00000000	00000
1 7/8"	1 1/2	__	Rigid	5.9	0000000	00000	11.8	00000000	00000
2 3/8"	2	__	Rigid	5.9	0000000	00000	11.8	00000000	00000
2 7/8"	2 1/2	__	Rigid	5.9	0000000	00000	11.8	00000000	00000
3 1/2"	__	__	Rigid	5.9	0000000	00000	11.8	00000000	00000
4"	__	__	Rigid	5.9	0000000	00000	11.8	00000000	00000
4 1/2"	4	__	Rigid	5.9	0000000	00000	11.8	00000000	00000

Plastic Pipe Insulation Jacketing

Protect insulation from light impact and moisture with this durable PVC jacketing. When selecting size, use the OD of the insulation you are jacketing. Seal with sealant or tape (not included).

45° Elbows

45° Elbow

Temperature Range: 0° to 140° F
Color: White
Specifications Met: ASTM E84 25/50 for Flame and Smoke

For Pipe Insulation OD	Flexibility	Includes		Each
1 7/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	00000
2 1/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	00000000	0000
2 3/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
2 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	00000000	0000
2 7/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
3 1/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	00000000	0000
3 3/8"-3 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
3 7/8"-4 1/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
4 3/8"-4 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
4 7/8"-5 3/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
5 1/2"-5 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
5 7/8"-6 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	00000
6 7/8"-7 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	00000
7 7/8"-8 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	00000
8 7/8"-9 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	00000
10 1/8"-10 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	00000
11 1/8"-11 3/4"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	00000000	00000
12 1/8"-12 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	00000000	00000

Silicone Sealant (10.1-oz. Cartridge)	0000000	Each	000000
Tape (2" × 108 ft.)	00000000	Each	00000

90° Elbows

90° Elbow

Temperature Range: 0° to 140° F
Color: White
Specifications Met: ASTM E84 25/50 for Flame and Smoke

For Pipe Insulation OD	Flexibility	Includes		Each
1 7/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	00000
2 1/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	00000000	0000
2 3/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
2 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	00000000	0000
2 7/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
3 1/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	00000000	0000
3 3/8"-3 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
3 7/8"-4 1/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
4 3/8"-4 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
4 7/8"-5 3/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
5 1/2"-5 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	0000
5 7/8"-6 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	00000
6 7/8"-7 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	00000
7 7/8"-8 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	00000
8 7/8"-9 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	00000
10 1/8"-10 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	000000000	00000
11 1/8"-11 3/4"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	00000000	00000
12 1/8"-12 5/8"	Flexible	1 1/2" Thick Piece of Fiberglass Insulation	00000000	00000

Tape (2" × 108 ft.)	00000000	Each	000000
Silicone Sealant (10.1-oz. Cartridge)	0000000	Each	00000

Metal Pipe Insulation Jacketing

Tube

Elbow

Guard insulation from heavy impact and chemical exposure. This metal jacketing is corrosion resistant and often used outdoors. Install with banding (not included).

Tubes are coated in a film that creates a moisture barrier.

Aluminum Tubes

For Pipe Insulation OD	Lg., ft.	Color	Flexibility	Specifications Met		Each
3"	3	Silver	Flexible	ASTM B209	0000000	00000
3 1/2"	3	Silver	Flexible	ASTM B209	0000000	00000
4"	3	Silver	Flexible	ASTM B209	0000000	00000
4 1/2"	3	Silver	Flexible	ASTM B209	0000000	00000
5"	3	Silver	Flexible	ASTM B209	0000000	00000
5 1/2"	3	Silver	Flexible	ASTM B209	0000000	00000
6 1/2"	3	Silver	Flexible	ASTM B209	0000000	00000

Aluminum 90° Elbows

For Pipe Insulation OD	Color	Flexibility	Specifications Met		Each
2 1/2"-3"	Silver	Flexible	ASTM B209	0000000	000000
3 1/8"-3 5/8"	Silver	Flexible	ASTM B209	0000000	00000
3 3/4"-4"	Silver	Flexible	ASTM B209	0000000	00000
4 1/8"-4 3/8"	Silver	Flexible	ASTM B209	0000000	00000
4 1/2"-5"	Silver	Flexible	ASTM B209	0000000	00000
5 1/8"-5 5/8"	Silver	Flexible	ASTM B209	0000000	00000
5 3/4"-6 5/8"	Silver	Flexible	ASTM B209	0000000	00000
6 3/4"-7 5/8"	Silver	Flexible	ASTM B209	0000000	00000
7 3/4"-8 5/8"	Silver	Flexible	ASTM B209	0000000	00000
8 3/4"-9 5/8"	Silver	Flexible	ASTM B209	0000000	00000