Ultra Flexible Duct | McMaster-Carr

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149 Products

About Conduit

Liquid-Tight Flexible Plastic Conduit

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

Conduit

The spiral design makes this conduit flexible. When used with liquid-tight fittings, it seals out liquid and resists oil, corrosion, and UV light. Route it around tight bends and use in high-vibration applications or those that require periodic flexing. This conduit cuts cleanly with no jagged edges and has a smooth interior that protects wire and cable from abrasion when being pulled.

												Per Ft.
Conduit Trade Size	ID	OD	Bend Radius	Flexibility	Material	Color	Temperature Range, °F	Environment	Specifications Met	Lengths, ft.		1-99	100-Up
1/4	0.39"	0.57"	1"	Ultra Flexible	PVC	Black	0° to 155°	Washdown	UL Recognized Component	5, 10, 25, 50, 100	000000	00000	00000
3/8	0.49"	0.7"	2"	Ultra Flexible	PVC	Black	0° to 155°	Washdown	UL Recognized Component	5, 10, 25, 50, 100	000000	0000	0000
1/2	0.63"	0.83"	2"	Ultra Flexible	PVC	Black	0° to 155°	Washdown	UL Recognized Component	5, 10, 25, 50, 100	000000	0000	0000
3/4	0.83"	1.04"	2"	Ultra Flexible	PVC	Black	0° to 155°	Washdown	UL Recognized Component	5, 10, 25, 50, 100	000000	0000	0000
1	1.05"	1.3"	3"	Ultra Flexible	PVC	Black	0° to 155°	Washdown	UL Recognized Component	5, 10, 25, 50, 100	000000	0000	0000
1 1/4	1.39"	1.64"	4"	Ultra Flexible	PVC	Black	0° to 155°	Washdown	UL Recognized Component	5, 10, 25, 50, 100	000000	0000	0000
1 1/2	1.59"	1.88"	4"	Ultra Flexible	PVC	Black	0° to 155°	Washdown	UL Recognized Component	2, 5, 10, 25, 50	000000	00000	0000
2	2.03"	2.36"	5"	Ultra Flexible	PVC	Black	0° to 155°	Washdown	UL Recognized Component	2, 5, 10, 25, 50	000000	00000	00000

Straight Adapters

Push-In × Threaded

Twist-In × Threaded

Use these adapters to attach liquid-tight flexible plastic conduit to a knockout in an outlet box or enclosure. They provide a connection that seals out liquid and resists oil, corrosion, and UV light. They are UL listed when used with abrasion-resistant liquid-tight flexible plastic conduit (Type B).

Adapters with a push-in end are removable and reusable. The twist-in end attaches to conduit with a few quick turns.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Size	Thread Type	Gender	Material	Includes	Choose a Color		Each
Push-In Conduit Connection × Threaded Electrical Box Connection
1/4	Female	__	PG-7	PG	Male	Nylon	Steel Locknut	Black	00000000	00000
3/8	Female	1/2	__	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	0000
1/2	Female	1/2	__	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	0000
3/4	Female	3/4	__	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	0000
1	Female	1	__	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	0000
1 1/4	Female	1 1/4	__	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	00000
1 1/2	Female	1 1/2	__	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	00000
2	Female	2	__	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	00000
Twist-In Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	__	NPT	Male	Nylon	Zinc Locknut	Black, Gray	0000000	0000
1/2	Female	1/2	__	NPT	Male	Nylon	Zinc Locknut	Black, Gray	0000000	0000
3/4	Female	3/4	__	NPT	Male	Nylon	Zinc Locknut	Black, Gray	0000000	0000
1	Female	1	__	NPT	Male	Nylon	Zinc Locknut	Black, Gray	0000000	0000

90° Elbow Adapters

Push-In × Threaded

Twist-In × Threaded

Adapters with a push-in end are removable and reusable. The twist-in end attaches to conduit with a few quick turns.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Material	Includes	Choose a Color		Each
Push-In Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	00000
1/2	Female	1/2	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	0000
3/4	Female	3/4	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	00000
1	Female	1	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	00000
1 1/4	Female	1 1/4	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	00000
1 1/2	Female	1 1/2	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	00000
2	Female	2	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	00000
Twist-In Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPT	Male	Nylon	Zinc Locknut	Black, Gray	0000000	0000
1/2	Female	1/2	NPT	Male	Nylon	Zinc Locknut	Black, Gray	0000000	0000
3/4	Female	3/4	NPT	Male	Nylon	Zinc Locknut	Black, Gray	0000000	0000
1	Female	1	NPT	Male	Nylon	Zinc Locknut	Black, Gray	0000000	00000

Adjustable-Angle Elbow Adapters

Adapters with a push-in end are removable and reusable.

Adjustable-angle elbow adapters can be positioned at any angle from 0° to 90°.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Material	Includes	Choose a Color		Each
Push-In Conduit Connection × Threaded Electrical Box Connection
1/2	Female	1/2	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	00000
3/4	Female	3/4	NPT	Male	Nylon	Steel Locknut	Black, Gray	00000000	00000
1	Female	1	NPT	Male	Nylon	Nylon Locknut	Black, Gray	00000000	00000

Connectors

Twist these connectors into two pieces of liquid-tight flexible plastic conduit for a quick connection that seals out liquid and resists oil, corrosion, and UV light. When used with abrasion-resistant liquid-tight flexible plastic conduit (Type B), they are UL listed.

Conduit Connection
Conduit Trade Size	Gender	Material	Color		Each
Twist-In Conduit Connection
3/8	Male	PVC	Gray	0000000	00000
1/2	Male	PVC	Gray	0000000	0000
3/4	Male	PVC	Gray	0000000	0000
1	Male	PVC	Gray	0000000	0000

Liquid-Tight Flexible Metal Conduit

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

When used with liquid-tight fittings, this conduit seals out liquid. The steel core provides crush resistance, and the cover is UV light resistant. Use this bendable conduit for connections to motors and other equipment in tight areas.

Ultra-flexible conduit bends and twists for installation in tighter areas than flexible conduit.

										Per Ft.
Conduit Trade Size	ID	OD	Bend Radius	Cover Material	Temperature Range, °F	Environment	Color	Lengths, ft.		1-99	100-Up
Ultra-Flexible Zinc-Plated Steel
3/8	0.49"	0.7"	2"	PVC	0° to 140°	Washdown	Black	5, 10, 25, 50, 100	0000000	00000	00000
1/2	0.63"	0.83"	2"	PVC	0° to 140°	Washdown	Black	5, 10, 25, 50, 100	0000000	0000	0000
3/4	0.83"	1.04"	3"	PVC	0° to 140°	Washdown	Black	5, 10, 25, 50, 100	0000000	0000	0000
1	1.05"	1.3"	3"	PVC	0° to 140°	Washdown	Black	5, 10, 25, 50, 100	0000000	0000	0000
1 1/4	1.39"	1.65"	4"	PVC	0° to 140°	Washdown	Black	2, 5, 10, 25, 50	0000000	0000	0000
1 1/2	1.59"	1.88"	4"	PVC	0° to 140°	Washdown	Black	2, 5, 10, 25, 50	0000000	0000	0000
2	2.03"	2.36"	5"	PVC	0° to 140°	Washdown	Black	2, 5, 10, 25, 50	0000000	00000	0000

Straight Adapters

Adapter with Locknut

Adapter with
Grounding
Lug and Locknut

Adapter with Wire-Mesh Grip and Locknut

Adapter

When used to connect liquid-tight flexible metal conduit to a knockout in an outlet box or enclosure, these fittings seal out liquids. Attach the twist-in end to conduit with a few quick turns.

316 stainless steel adapters are corrosion resistant.

Adapters with grounding lug ground conduit outside an outlet box or enclosure. Run a ground wire through the lug. Adapters with a wire-mesh grip provide strain relief and added protection against conduit pullout.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Features		Each
Adapters with Locknut—Zinc
3/8	Female	1/2	NPT	Male	__	0000000	00000
1/2	Female	1/2	NPT	Male	__	0000000	0000
3/4	Female	3/4	NPT	Male	__	0000000	0000
1	Female	1	NPT	Male	__	0000000	0000
1 1/4	Female	1 1/4	NPT	Male	__	0000000	00000
1 1/2	Female	1 1/2	NPT	Male	__	0000000	00000
2	Female	2	NPT	Male	__	0000000	00000
Adapters with Locknut—Zinc-Plated Steel
3/8	Female	1/2	NPT	Male	__	0000000	0000
1/2	Female	1/2	NPT	Male	__	0000000	0000
3/4	Female	3/4	NPT	Male	__	0000000	0000
1	Female	1	NPT	Male	__	0000000	00000
1 1/4	Female	1 1/4	NPT	Male	__	0000000	00000
1 1/2	Female	1 1/2	NPT	Male	__	0000000	00000
2	Female	2	NPT	Male	__	0000000	00000
Adapters with Grounding Lug and Locknut—Steel
3/8	Female	1/2	NPT	Male	__	0000000	0000
1/2	Female	1/2	NPT	Male	__	0000000	00000
3/4	Female	3/4	NPT	Male	__	0000000	00000
1	Female	1	NPT	Male	__	0000000	00000
Adapters with Grounding Lug and Locknut—Iron
1 1/4	Female	1 1/4	NPT	Male	__	0000000	00000
1 1/2	Female	1 1/2	NPT	Male	__	0000000	00000
2	Female	2	NPT	Male	__	0000000	000000
Adapters with Wire-Mesh Grip and Locknut—Zinc-Plated Steel
3/8	Female	1/2	NPT	Male	6" lg. Stainless Steel Wire-Mesh Grip	00000000	00000
1/2	Female	1/2	NPT	Male	5 1/4" lg. Stainless Steel Wire-Mesh Grip	00000000	00000
3/4	Female	3/4	NPT	Male	6 1/2" lg. Stainless Steel Wire-Mesh Grip	00000000	00000
1	Female	1	NPT	Male	7 3/4" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
1 1/4	Female	1 1/4	NPT	Male	10 5/8" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
1 1/2	Female	1 1/2	NPT	Male	11" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
2	Female	2	NPT	Male	14" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
Adapters—316 Stainless Steel
3/8	Female	3/8	NPT	Male	__	0000000	00000
1/2	Female	1/2	NPT	Male	__	0000000	00000
3/4	Female	3/4	NPT	Male	__	0000000	00000
1	Female	1	NPT	Male	__	0000000	000000
1 1/4	Female	1 1/4	NPT	Male	__	0000000	000000
1 1/2	Female	1 1/2	NPT	Male	__	0000000	000000
2	Female	2	NPT	Male	__	0000000	000000

45° Elbow Adapters

Adapter with Locknut

Adapter with Grounding Lug and Locknut

Adapter with Wire-Mesh Grip and Locknut

Adapter

When used to connect liquid-tight flexible metal conduit to a knockout in an outlet box or enclosure, these fittings seal out liquids. Attach the twist-in end to conduit with a few quick turns.

316 stainless steel adapters are corrosion resistant.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Features		Each
Adapters with Locknut—Zinc-Plated Iron
3/8	Female	1/2	NPT	Male	__	0000000	000000
1/2	Female	1/2	NPT	Male	__	0000000	00000
3/4	Female	3/4	NPT	Male	__	0000000	00000
1	Female	1	NPT	Male	__	0000000	00000
1 1/4	Female	1 1/4	NPT	Male	__	0000000	00000
1 1/2	Female	1 1/2	NPT	Male	__	0000000	00000
2	Female	2	NPT	Male	__	0000000	00000
Adapters with Locknut—Iron
3/8	Female	1/2	NPT	Male	__	0000000	0000
1/2	Female	1/2	NPT	Male	__	0000000	0000
3/4	Female	3/4	NPT	Male	__	0000000	00000
1	Female	1	NPT	Male	__	0000000	00000
1 1/4	Female	1 1/4	NPT	Male	__	0000000	00000
1 1/2	Female	1 1/2	NPT	Male	__	0000000	00000
2	Female	2	NPT	Male	__	0000000	00000
Adapters with Grounding Lug and Locknut—Iron
3/8	Female	1/2	NPT	Male	__	0000000	00000
1/2	Female	1/2	NPT	Male	__	0000000	00000
3/4	Female	3/4	NPT	Male	__	0000000	00000
1	Female	1	NPT	Male	__	0000000	00000
1 1/4	Female	1 1/4	NPT	Male	__	0000000	00000
1 1/2	Female	1 1/2	NPT	Male	__	0000000	000000
2	Female	2	NPT	Male	__	0000000	000000
Adapters with Wire-Mesh Grip and Locknut—Zinc-Plated Steel
3/8	Female	1/2	NPT	Male	6" lg. Stainless Steel Wire-Mesh Grip	00000000	00000
1/2	Female	1/2	NPT	Male	5 1/4" lg. Stainless Steel Wire-Mesh Grip	00000000	00000
3/4	Female	3/4	NPT	Male	6 1/2" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
1	Female	1	NPT	Male	7 3/4" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
1 1/4	Female	1 1/4	NPT	Male	10 5/8" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
1 1/2	Female	1 1/2	NPT	Male	11" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
2	Female	2	NPT	Male	14" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
Adapters—316 Stainless Steel
1/2	Female	1/2	NPT	Male	__	0000000	00000
3/4	Female	3/4	NPT	Male	__	0000000	000000
1	Female	1	NPT	Male	__	0000000	000000
1 1/4	Female	1 1/4	NPT	Male	__	0000000	000000
1 1/2	Female	1 1/2	NPT	Male	__	0000000	000000
2	Female	2	NPT	Male	__	0000000	000000

90° Elbow Adapters

Adapter with Locknut

Adapter with Grounding Lug and Locknut

Adapter with Wire-Mesh Grip and Locknut

Adapter

When used to connect liquid-tight flexible metal conduit to a knockout in an outlet box or enclosure, these fittings seal out liquids. Attach the twist-in end to conduit with a few quick turns.

316 stainless steel adapters are corrosion resistant.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Features		Each
Adapters with Locknut—Zinc
3/8	Female	1/2	NPT	Male	__	0000000	00000
1/2	Female	1/2	NPT	Male	__	0000000	0000
3/4	Female	3/4	NPT	Male	__	0000000	0000
1	Female	1	NPT	Male	__	0000000	00000
1 1/4	Female	1 1/4	NPT	Male	__	0000000	00000
1 1/2	Female	1 1/2	NPT	Male	__	0000000	00000
2	Female	2	NPT	Male	__	0000000	00000
Adapters with Locknut—Zinc-Plated Iron
3/8	Female	1/2	NPT	Male	__	0000000	00000
1/2	Female	1/2	NPT	Male	__	0000000	00000
3/4	Female	3/4	NPT	Male	__	0000000	00000
1	Female	1	NPT	Male	__	0000000	00000
1 1/4	Female	1 1/4	NPT	Male	__	0000000	00000
1 1/2	Female	1 1/2	NPT	Male	__	0000000	00000
2	Female	2	NPT	Male	__	0000000	00000
Adapters with Grounding Lug and Locknut—Iron
3/8	Female	1/2	NPT	Male	__	0000000	00000
1/2	Female	1/2	NPT	Male	__	0000000	00000
3/4	Female	3/4	NPT	Male	__	0000000	00000
1	Female	1	NPT	Male	__	0000000	00000
1 1/4	Female	1 1/4	NPT	Male	__	0000000	00000
1 1/2	Female	1 1/2	NPT	Male	__	0000000	00000
2	Female	2	NPT	Male	__	0000000	000000
Adapters with Wire-Mesh Grip and Locknut—Zinc-Plated Steel
3/8	Female	1/2	NPT	Male	6" lg. Stainless Steel Wire-Mesh Grip	00000000	00000
1/2	Female	1/2	NPT	Male	5 1/4" lg. Stainless Steel Wire-Mesh Grip	00000000	00000
3/4	Female	3/4	NPT	Male	6 1/2" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
1	Female	1	NPT	Male	7 3/4" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
1 1/4	Female	1 1/4	NPT	Male	10 5/8" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
1 1/2	Female	1 1/2	NPT	Male	11" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
2	Female	2	NPT	Male	14" lg. Stainless Steel Wire-Mesh Grip	00000000	000000
Adapters—316 Stainless Steel
3/8	Female	3/8	NPT	Male	__	0000000	00000
1/2	Female	1/2	NPT	Male	__	0000000	000000
3/4	Female	3/4	NPT	Male	__	0000000	000000
1	Female	1	NPT	Male	__	0000000	000000
1 1/4	Female	1 1/4	NPT	Male	__	0000000	000000
1 1/2	Female	1 1/2	NPT	Male	__	0000000	000000
2	Female	2	NPT	Male	__	0000000	000000