3:1 Heat Shrink Tubing for Pro Grade Wire Insulation

High shrink ratio helps seal and protect large size differences or awkward shaped objects
Flame retardant and heat resistant allowing the heat shrink to help protect your delicate cables from damage
Les than 10% shrinkage in the axial direction so you can better estimate the length of material you will need
Passes UL VW-1, CSA OFT, -F- MARK for safety specifications

3:1 Heat Shrink is ROHS (Restriction of Hazardous Substances) Compliant

Adhesive Lined Tubing

Our 3:1 heat shrink tubing is also available with a "dual-wall" construction. During application, the inner layer melts and flows, creating an adhesion layer to ensure a snug fit to your harness and/or connector.
It is recommended for applications that require a water-tight seal to protect wire, cable and connector components.
It can also be used for color coding, such as on industrial batteries where red & black are used as a protective strain relief and to identify the positive (red) connection or negative (black) connection.

Size	Expanded		Recovered
Size	Internal Diameter Minimum (D)		Internal Diameter Maximum (d)		Minimum Total Wall Thickness (t)
Metric (Inch)	In.	mm	in.	mm	in.	mm
1.5mm (1/16")	0.059	1.5	0.020	0.5	0.0157	0.40
3mm (1/8")	0.118	3.0	0.039	1.0	0.0120	0.50
4.5mm (3/16")	0.177	4.5	0.059	1.5	0.0212	0.54
6mm (1/4")	0.235	6.0	0.078	2.0	0.0232	0.59
9mm (3/8")	0.354	9.0	0.118	3.0	0.0268	0.68
12mm (1/2")	0.472	12.0	0.157	4.0	0.0268	0.68
18mm (3/4")	0.708	18.8	0.236	6.0	0.0303	0.77
24mm (1")	0.945	24.0	0.315	8.0	0.0354	0.90
38mm (1-1/2")	1.496	38.0	0.512	13.0	0.0409	1.04

PHYSICAL PROPERTY	TEST METHOD	TYPICAL VALUE
Tensile Strength (psi)	ASTM D 638	1500 min.
Elongation (%)	ASTM D 638	200 min.
Specific Gravity	ASTM D 792	1.35 max.
Low Temperature Flexibility -55°C	MIL-DTL-23053	no cracking
Heat Shock 4 hours at 250°C	MIL-DTL-23053	no cracking
Heat Resistance (175°C, 168 hrs.) Elongation (%)	ASTM D638	100 min.
Secant Modulus (psi)	ASTM D 882	2.5 x 10,000 max.
Longitudinal Change (%)	MIL-DTL-23053	+-5
Electrical
Dielectric Strength	ASTM D 876	500 min.
Volume Resistivity	ASTM D 876	1.0 x 10,000 min.
Chemical
Corrosion (175°C, 16hrs)	MIL-DTL-23053	no corrosion
Water Absorption (%)	ASTM D 570	0.5 max.
Fluid Resistance (23°C, 24 hrs.) Tensile Strength (psi)	MIL-I-23053	1000 min.
Flammability	UL 224 VW-1	pass
Shrink Temperature, Nominal		90°C

Application (Typical)	General Purpose Over Expanded
Recovery Temperature	90°C
Flame Retardant	YES
Continuous Operating Temperature	-55 to 135°C
Flexibility	Excellent
Abrasion Resistance	Good
Solvent Resistance	Good
Standard Colors	Black, White, Red, Yellow, Blue
UL Rating & File No. (Subject 224)	125°C, 600V VW-1 (Jacket only for dual wall) E48762
UL Catalog No.	826 Suffix 3X

Specification reference:
MIL-I-23053/5 Class 1 and Class 3. MIL-R-46846, Type V
UL 224 125°C, 600 V, VW-1 File E48762 YDPU2

LG heat shrinkable and non-shrinkable tubing products do not contain the compound Di (2-ethylhexyl) phthalate commonly referred to as DEHP.

In addition, LG heat shrinkable and non-shrinkable tubing products do not contain PFOS (perfluoroctane sulfonate), PFOA (perfluorocanoic acid) or Tinuvin 320.

3:1 Heat Shrink - PER FOOT AND BULK

Please Note: Our Diameters for Heat Shrink Tubing are measured as ROUND TUBE, NOT FLAT
Due to the nature of the materials, all braided sleeving, wire loom, heat shrink, and spiral wrap products sold by the foot will not be refunded IN FULL if they are cut up in sections of 20' or shorter. 50% restocking fee on returns of 20 feet or less. 25% restocking fee if there is a reorder.

PER FOOT
Discount pricing is automatically calculated based on quantity entered at checkout.

PART #	SIZE		COLORS	QTY DISCOUNT		QTY	PRICE per Foot Add Quantity at Checkout
	Before	After
HS3-0125FT	1/8"	1/24"	Black, Clear, Red, White	1 - 99 ft	$ 0.73	per ft.	$0.73
				100+ ft	$ 0.47
HS3-0188FT	3/16"	1/16"	Black, Clear, Red, White, Yellow	1 - 49 ft	$ 0.94	per ft.	$0.94
				50+ ft	$ 0.61
HS3-025FT	1/4"	1/12"	Black, Clear, Red, White, Yellow	1 - 49 ft	$ 1.12	per ft.	$1.12
				50+ ft	$ 0.73
HS3-0375FT	3/8"	1/8"	Black, Clear, Red, White, Yellow	1 - 49 ft	$ 1.40	per ft.	$1.40
				50+ ft	$ 0.70
HS3-050FT	1/2"	1/6"	Black, Clear, Red, White, Yellow	1 - 49 ft	$ 1.68	per ft.	$1.68
				50+ ft	$ 1.10
HS3-075FT	3/4"	1/4"	Black, Clear, Red, White, Yellow	1 - 49 ft	$ 2.29	per ft.	$2.29
				50+ ft	$ 1.49
HS3-100FT	1"	1/3"	Black, Clear, Red, White, Yellow	1 - 49 ft	$ 2.91	per ft.	$2.91
				50+ ft	$ 1.89
HS3-150FT	1-1/2"	1/2"	Black, Clear, Red, White	1 - 49 ft	$ 4.91	per ft.	$4.91
				50+ ft	$ 3.19

BULK SPOOLS

PART #	SIZE		COLORS	SPOOL QTY	PRICE per Foot Add Quantity at Checkout
PART #	Before	After	COLORS	SPOOL QTY	PRICE per Foot Add Quantity at Checkout
HS3-0125SP500	1/8"	1/24"	Black, Clear, Red, White	500 ft.	$182.00
HS3-0188SP250	3/16"	1/16"	Black, Clear, Red, White, Yellow	250 ft.	$117.00
HS3-025SP250	1/4"	1/12"	Black, Clear, Red, White, Yellow	250 ft.	$140.40
HS3-0375SP200	3/8"	1/8"	Black, Clear, Red, White, Yellow	200 ft.	$108.76
HS3-050SP200	1/2"	1/6"	Black, Clear, Red, White, Yellow	200 ft.	$168.48
HS3-075SP200	3/4"	1/4"	Black, Clear, Red, White, Yellow	200 ft.	$228.80
HS3-100SP100	1"	1/3"	Black, Clear, Red, White, Yellow	100 ft.	$145.60
HS3-150SP100	1-1/2"	1/2"	Black, Clear, Red, White	100 ft.	$245.70

3:1 Heat Shrink - Technical Specifications. click here
For military specifications and a manufacturers' cross reference, click here
Normally our policy is to supply continuous lengths. If it is absolutely necessary to receive one continuous length, please specify.

Dual Wall 3:1 - PER FOOT

Please Note: Our Diameters for Heat Shrink Tubing are measured as ROUND TUBE, NOT FLAT
Due to the nature of the materials, all braided sleeving, wire loom, heat shrink, and spiral wrap products sold by the foot will not be refunded IN FULL if they are cut up in sections of 20' or shorter. 50% restocking fee on returns of 20 feet or less. 25% restocking fee if there is a reorder.

The longest continuous length available is 4 ft.

PART #	BEFORE SHRINKING	AFTER SHRINKING	COLOR	PRICE / FOOT
HS3A-0125FT	1/8 in.	.04 in.	Clear, Black and Red	$1.17
HS3A-025FT	1/4 in.	.08 in.	Black, Red, Green	$1.50
HS3A-0375FT	3/8 in.	.125 in.	Yellow, White, Black, Red, Clear, Blue	$2.50
HS3A-050FT	1/2 in.	.167 in.	Yellow, Black, Red, Clear, Blue, Green	$3.00
HS3A-075FT	3/4 in.	.250 in.	Yellow, Black, Red, Clear, Blue	$3.50
HS3A-100FT	1 in.	.375 in.	Yellow, Black, Red, Clear	$6.00
HS3A-150FT	1 1/2 in.	.500 in.	Black, Clear, Red	$12.00

Dual Wall 3:1 - CUT PIECES
Please Note: Our Diameters for Heat Shrink Tubing are measured as ROUND TUBE, NOT FLAT
Custom Sizes and Cut Pieces are NON-RETURNABLE and NON-REFUNDABLE

PART #	BEFORE SHRINKING	AFTER SHRINKING	LENGTH / PIECE	PIECES / PACK	COLOR	PRICE / PACK
HS3A-0125PCS	1/8 in.	.04 in.	6 in.	8	Black	$4.00
HS3A-025PCS	1/4 in.	.08 in.	6 in.	8	Black	$5.00
HS3A-0375PCS	3/8 in.	.125 in.	6 in.	6	Black	$6.00
HS3A-050PCS	1/2 in.	.167 in.	6 in.	6	Black	$6.50
HS3A-075PCS	3/4 in.	.250 in.	6 in.	4	Black	$7.00
HS3A-100PCS	1 in.	.333 in.	6 in.	3	Black	$7.75
HS3A-150PCS	1 1/2 in.	.500 in.	6 in.	2	Black	$8.00

Normally our policy is to supply continuous lengths. If it is absolutely necessary to receive one continuous length, please specify.

Limiting Oxygen Index (LOI)
The ratio of how much oxygen - as compared to other gases - needs to be present in the air surrounding a particular material in order for that material to burn. The fact that Earth's normal atmospheric air contains around 21% oxygen is used a reference point when materials are classified into burn categories that are based on Limiting Oxygen Index. Substances that are combustible in air containing less than 21% oxygen are considered flammable, while those that burn in the range of anything greater than 21% but less than 28% are typically labeled "slow burning". Any material with an LOI that exceeds 28% is classified as self-extinguishing.

In the table below, you'll find a list of polymers commonly found in our heat shrink tubing and braided sleeving products, along with their LOIs and the burn categories each falls into.

MATERIAL	ALTERNATE NAME	LOI	CATEGORY
ECTFE (Ethylene chlorotrifluoroethylene)	Halar	64%	Self Extinguishing
Nomex	N/A	28%	Slow Burning
Nylon 6:6	N/A	Ranges fron 24-29%	Slow Burning to Self Extinguishing
PET (Polyethylene Terephthalate)	Mylar (film), Dacron (fiber)	Ranges from 21-34%	Slow Burning to Self Extinguishing
Polyethylene (PE)	N/A	17%	Flammable
Polypropylene (PP)	polythene (in the UK)	17%	Flammable
Polytetrafluoroethylene (PTFE)	Teflon	95%	Self Extinguishing
Polyvinyl Chloride (PVC)	N/A	Ranges from 45-49%	Self Extinguishing

RELATED ARTICLES -

HOW-TO CORNER -
Instructions on how to use Heat Shrink Tubing. Click here
Terminate the ends of your Braided Sleeving? Click here
How do we measure Heat Shrink? View here

CATALOG - PDF
For your convenience, we have made our brochure and catalogs available online in PDF format. Downloading the PDF catalog will take you no more than 5 minutes, so you won’t have to wait days for the print catalog. PDF catalogs include links to our products: just click on the hyperlinked product headings, and you’ll be directed right to our website.
Office PDF Catalog 2 MB
Automotive PDF Catalog 2.6 MB
Aerospace/Aircraft PDF Catalog 2 MB
Utilities & Energy PDF Catalog 3.7 MB
Datacom/Telecom PDF Catalog 5.7 MB

2:1 Heat Shrink Tubing Kit Price $10.99 2:1 Standard Wall From $0.50 per foot 2:1 Dual Wall Call for pricing Cheap 2:1 Heat Shrink From per spool	3:1 Standard Wall From $0.53 per foot 3:1 Adhesive From $1.17 per foot Cheap 3:1 Heat Shrink From $14.40 per spool

4:1 Standard Wall From $2.75 per foot 4:1 Adhesive From $0.95 per foot Our 4:1 heat shrink tubing is used for jacket retrofitting or repair and electrical insulation of wire assemblies with oversize components or connectors.	Cheap 6:1 Heat Shrink From $18.08 for 48" piece Standard 6:1 Heat Shrink From $21.23 for 48" piece

2:1 Neoprene Heat Shrink Tubing 2:1 Viton® Heat-shrinkable 2:1 Diesel Resistant Heat Shrink Tubing These heat shrink tubings are formulated for special types of situations where standard protection would not be enough.	Heat Shrink UV Reactive From $1.00 per foot It is available in a 2:1 shrink ratio and in Luminous, Neon Pink, Neon Yellow, Neon Green, Luminous Green, and Gold.

Heat Shrink End Caps From $0.70 Secure the ends of the tubing with these caps available in black in all three sizes.	Conductive Heat Shrink Connectors From $3.99 per foot They are entirely coated on their inner surface providing shielding around the joints being connected.

Heat Shrink Tools/ Heat Guns From $29.99 We offer a range of options to shrink your tubing, from small torches to ovens.

High Temperature (Fluoropolymer) Heat Shrink Tubing
Fluorinated Ethylene-Propylene (FEP) Heat Shrink Tubing From $1.99 per foot FEP is used in cases where temperatures are not as extreme, and very high shrink ratios are not necessary.	Polytetrafluoroethylene (PTFE) Heat Shrink Tubing From $4.14 per foot PTFE is widely used in military applications because of its high continuous use temperature and outstanding chemical resistance.

Polyvinylidene Fluoride (PVDF, Kynar®) Heat Shrink Tubing From $5.49 per 4 FT PVDF is used in applications where continuous operating temperatures are 150-175°C. It is used where outstanding abrasion and cut-through resistance are required.	PTFE/FEP Dual Wall Heat Shrink Tubing From $2.26 per FT Constructed with an outer layer of heat shrinkable PTFE and an inner layer of FEP, it is easy to apply & is designed to provide a tight, moisture-proof bond.