Fluorinated Ethylene-Propylene (FEP) Heat Shrink Tubing

FEP heat shrink tubing is a common alternative to PTFE, with similar electrical and friction properties and chemical resistance. FEP heat shrinkable tubing conforms to Mil-I-23053/11, and UL 94 (V0, VW-1), and is suitable for continuous use at temperatures up to 204°C.

FEP heat shrink tubing is used in cases where temperatures are not as extreme, and very high shrink ratios are not necessary. It is also widely used when components cannot handle the extreme shrink temperature of PTFE. It is available in 1.6:1 and 1.3:1 varieties, shrinks at around 190-210°C, and has found widespread use and appeal.

• Transparent
• Offers an excellent coefficient of friction
• Chemically inert and resistant
• Lower gas ans vapor permeability than TFE material
• Gamma, ETO, e-beam and autoclave sterilizable
• Excellent transmission f ultraviolet rays
• Low absorption of solvents (< 1%)
• Biocompatible, FEP is certified USP Class VI
• LOI >95

 

• FEP Specifications
• FEP AMS-DTL-23053/11 Specifications
• FEP 1.3:1 - Technical Specifications
• FEP 1.6:1 - Technical Specifications
• FEP Chemical Resistance Table
• Cross Reference Table
• RoHS Compliance (PDF) 234KB
• UL Card (PDF) 44KB
• FEP Resin Material Specifications

1.3:1 Ratio

AWG TUBING
ORDERED AS AWG SIZE NO.	MINIMUM I.D. SUPPLIED	RECOVERED DIMENSION - AFTER SHRINKING
		I.D. WILL SHRINK TO AT LEAST	WALL THICKNESS
			MINIMUM	NOMINAL	MAXIMUM
24	0.031	0.027	0.006	0.008	0.010
22	0.036	0.032	0.006	0.008	0.010
20	0.045	0.039	0.006	0.008	0.010
18	0.060	0.049	0.006	0.008	0.010
16	0.075	0.061	0.007	0.009	0.011
14	0.092	0.072	0.007	0.009	0.011
12	0.115	0.089	0.007	0.009	0.011
10	0.141	0.114	0.007	0.010	0.013
9	0.158	0.124	0.007	0.010	0.013
8	0.180	0.143	0.007	0.010	0.013
7	0.197	0.158	0.007	0.011	0.015
6	0.225	0.180	0.007	0.011	0.015
5	0.248	0.198	0.007	0.011	0.015
4	0.290	0.226	0.007	0.011	0.015
3	0.310	0.249	0.007	0.011	0.015
2	0.365	0.280	0.008	0.012	0.016
1	0.400	0.311	0.008	0.012	0.016
0	0.440	0.349	0.008	0.012	0.016

 

FRACTIONAL INCH TUBING
SIZE		MINIMUM I.D. SUPPLIED	RECOVERED DIMENSION - AFTER SHRINKING
FRACTIONAL	DECIMAL		I.D. WILL SHRINK TO AT LEAST	WALL THICKNESS
				MINIMUM	NOMINAL	MAXIMUM
3/8	0.375	0.500	0.383	0.011	0.015	0.019
7/16	0.438	0.580	0.448	0.016	0.020	0.024
1/2	0.500	0.666	0.510	0.016	0.020	0.024
5/8	0.625	0.830	0.637	0.021	0.025	0.029
3/4	0.750	1.000	0.764	0.026	0.030	0.034
7/8	0.875	1.170	0.891	0.031	0.035	0.039
1	1.000	1.330	1.020	0.031	0.035	0.039
1-1/8	1.125	1.666	1.270	0.031	0.035	0.039
1-1/4	1.250	1.666	1.270	0.031	0.035	0.039
1-3/8	1.375	1.833	1.390	0.031	0.035	0.039
1-1/2	1.500	2.000	1.520	0.031	0.035	0.039

 

1.6:1 Ratio
All Dimensions are in Inches

SIZE		MINIMUM I.D. EXPANDED	MAXIMUM I.D. RECOVERED	WALL THICKNESS
FRACTIONAL	DECIMAL			NOMINAL	TOLERANCE
3/32	0.093	0.093	0.056	0.008	+/- 0.003
1/8	0.125	0.125	0.075	0.010	+/- 0.003
3/16	0.188	0.188	0.115	0.010	+/- 0.003
1/4	0.250	0.250	0.150	0.010	+/- 0.003
3/8	0.375	0.375	0.225	0.012	+/- 0.003
1/2	0.500	0.500	0.300	0.015	+/- 0.004
3/4	0.750	0.750	0.450	0.020	+/- 0.004
1	1.000	1.000	0.600	0.025	+/- 0.005
1-1/2	1.500	1.500	0.900	0.030	+/- 0.005
2	2.000	2.000	1.200	0.030	+/- 0.005

 

Metric Dimensions (mm)

SIZE		MINIMUM I.D. EXPANDED	MAXIMUM I.D. RECOVERED	WALL THICKNESS
FRACTIONAL	MM			NOMINAL	TOLERANCE
3/32	2.36	2.36	1.42	0.20	±0.08
1/8	3.18	3.18	1.91	0.25	±0.08
3/16	4.78	4.78	2.92	0.25	±0.08
1/4	6.35	6.35	3.81	0.25	±0.08
3/8	9.53	9.53	5.72	0.31	±0.08
1/2	12.70	12.70	7.62	0.38	±0.10
3/4	19.05	19.05	11.43	0.51	±0.10
1	25.40	25.40	15.24	0.64	±0.13
1-1/2	38.10	38.10	22.86	0.76	±0.13
2	50.80	50.80	30.48	0.76	±0.13

APPLICABLE SPECIFICATION: MIL-I-23053/11
PACKAGING STANDARD LENGTHS, 4 foot Straight to Best Effort
Other lengths quoted upon request

View Measurement Conversion Chart

COLOR SUPPLIED IN NATURAL UNLESS OTHERWISE SPECIFIED.
MIL. STD. 104 COLORS AVAILABLE ON REQUEST

CUT PIECES: QUOTED ON REQUEST

UL File # E64007
CSA File # 082582
AMS-DTL-I-23053/11

Buy Now! Limited Quantities
1.3:1 Heat Shrink
Please call for immediate availability. A ship time of 3 weeks if not in stock.
*4 ft sections are the maximum on dual wall and specialty tubing
Custom Sizes and Cut Pieces are NON-RETURNABLE and NON-REFUNDABLE

PART #	SIZE BEFORE SHRINKING	SIZE AFTER SHRINKING	COLOR	PRICE / FT < 100FT
HSFEP13-0290-FT	0.290"	0.226"	Clear	Qty:
HSFEP13-0310-FT	0.310"	0.249"	Clear	Qty:
HSFEP13-0365-FT	0.365"	0.280"	Clear	Qty:
HSFEP13-0375-FT	0.375"		Clear	Qty:
HSFEP13-0400-FT	0.400"	0.311"	Clear	Qty:
HSFEP13-100-FT	1.00"	0.764"	Clear	Qty:
HSFEP13-150-FT	1.50"	1.145"	Clear	Qty:
HSFEP13-1833-FT-WT	1.833"	1.390"	White	Qty:

Normally our policy is to supply continuous lengths, but sometimes splicing may occur. If it is absolutely necessary to receive one continuous length, please specify.
*Small sizes available. Please Call

 

Buy Now! Limited Quantities
1.6:1 Heat Shrink
Please call for immediate availability. A ship time of 3 weeks if not in stock.
*4 ft sections are the maximum on dual wall and specialty tubing
Custom Sizes and Cut Pieces are NON-RETURNABLE and NON-REFUNDABLE

PART #	SIZE BEFORE SHRINKING	SIZE AFTER SHRINKING	PRICE / FT < 100FT
HSFEP16-0094-FT	3/32"	0.056"	Qty:
HSFEP16-0125-FT	1/8"	0.075"	Qty:
HSFEP16-0375-FT	3/8"	0.225"	Qty:
HSFEP16-075-FT	3/4"	0.450"	Qty:
HSFEP16-100-FT	1"	0.600"	Qty:
HSFEP16-200-FT	2"	1.200"	Qty:

Normally our policy is to supply continuous lengths, but sometimes splicing may occur. If it is absolutely necessary to receive one continuous length, please specify.
*Small sizes available. Please Call

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

 

ARTICLES - A place to find educational articles covering a wide range of topics, all categorized according to your areas of interest.Learn more

• Heat Shrink Tubing: How It Was Invented, and Why We Use It
• The Handyman's Guide to Improvisation: 7 New Ways to Use Heat Shrink Tubing

HOW-TO CORNER -

• How to use Heat Shrink Tubing
• Terminate the ends of your Braided Sleeving with Heat Shrink
• How do we measure Heat Shrink?

 

Heat Shrink Tools/ Heat Guns From $29.99 We offer a range of options to shrink your tubing, from small torches to ovens.	PTFE/FEP Dual Wall Heat Shrink Tubing From $2.97 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.
Polytetrafluoroethylene (PTFE) Heat Shrink Tubing From Item not found per foot PTFE is widely used in military applications because of its high continuous use temperature and outstanding chemical resistance.	Heat Shrink End Caps From $0.70 Secure the ends of the tubing with these caps available in black in all three sizes.