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3M™ Heat Shrink Tubing EPS-400
Adhesive-Lined, 4:1, Semi-Rigid, Polyolefin
Data Sheet May 2010
Description 3M™ Heat Shrink Tubing EPS-400 is a medium-wall, semi-rigid tubing offering the
advantages of integral, adhesive-lined construction. The tubing is made from flame-
retardant, flexible polyolefin with an internal layer of special thermoplastic adhesi ve.
The heat-shrinkable oute r wall is selectively cross-linked, while the adhesive
maintains high flow and excelle nt adhesion characteri stics.
When heated in excess of 121ºC (250ºF), EPS-400 tubing rapidly shrinks to a
skintight fit, forcing the melted adhesive t o flow and cover the substrate. Upon
cooling, the adhesive solidif ies, forming a permanent, non-drying, flexible and wa ter
resistant barrier. Adhesive reflow will occur at temperatures above 80ºC (176ºF).
Agency Approvals &
Self Certifications
Meets requirements of:
UL Listed, UL File E-157227
Applications EPS-400 tubing offers excellent environmental protection for electronic components,
wire splices, wire bundles and harness breakouts. Automotive, truck and marine
wire splices a nd harness breakouts are al so quickly and easily protected from a
variety of harsh environments.
Shrink Ratio EPS-400 tubing has a 4:1 shrink ratio. When fully recovered, the tubing will shri nk
25% of its as-supplied diameter. The recovered wall thickness of the tubing is
proportional to the degree of recovery.
The operating temperature range is from -55º C (-67ºF) to 110 ºC (230ºF), with a
shrink temperature minimum of 135 ºF (275 ºC).
Standard Sizes and
Dimensions
Ordering
Size
(Nominal)
Expanded I.D.
(Minimum) Recovered I.D.
(Maximum
Total Recovered
Wall Thickness
(Nominal)
Meltable
Recovered Wall
Thickness
In. (mm) In. (mm) In. (mm) In. (mm)
.300 .300 (7,62) .060 (1,52) .033 (0,84) .028 (0,71)
.350 .350 (8,89) .080 (2,03) .038 (0,97) .033 (0,84)
.450 .450 (11,43) .105 (2,67) .043 (1,09) .053 (1,35)
.700 .700 (17,78) .175 (4,45) .060 (1,52) .055 (1,40)
3M™ Heat Shrink Tubing EPS-400
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Typical Properties
Not for specifications. Values are typical, not to be considered minimum or maximum.
Properties measured at room temperature 73°F (23°C) unless otherwise stated.
Physical Property Typical Value
US units (metric)
Color Black and other color-
coded sizes
Tensile Strength 1900 PSI
Ultimate Elongation 400%
Longitudinal Cha nge +1, -10%
Secant Modulus (2%) 33,000 PSI
Specific Gravity 1.25
Heat Aging (outer wall only)
168 hrs @ 175ºC
Elongation 175%
Heat shock (outer wall only)
4 hrs @ 250 ºC No dripping, flowing,
cracking
Low Temperature Flexibility (outer wall only)
4 hrs @ -55 ºC No cracking
Flammability Self-extinguishing
Electrical Property (Test Method) Typical Value
US units (metric)
Dielectric Strength 700 V/mil
Volume Resistivity 1014 ohm/cm
Chemical Property (Test Method) Typical Value
US units (metric)
Corrosion Resistance (Copper mirror) Non-corrosive
Fungus Resistance Non-nutrient
Water Absorption 0.3%
Fluid Resistance Excellent
Adhesive Typical Value
Peel Strength, pli
Polyethylene
PVC
Lead
Aluminum
30
10
15
40
Corrosive Effect (Copper m irror) Non-corrosive
3M™ Heat Shrink Tubing EPS-400
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Important Notice All statements, technical information, and recommendations related to 3M’s products are based on information
believed to be reliable, but the accuracy or completeness is not guaranteed. Before using this product, you must
evaluate it and determine if it is suitable for your intended application. You assume all risks and liability
associated with such use. Any statements related to the product, which are not contained in 3M’s current
publications, or any contrary statements contained on your purchase order, shall have no force or effect unless
expressly agreed upon, in writing, by an authorized officer of 3M.
Warranty; Limited
Remedy; Limited
Liability
This product will be free from defects in material and manufacture at the time of purchase. 3M MAKES NO
OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the
warranty period stated above, your exclusive remedy shall be, at 3M’s option, to replace or repair the 3M product
or refund the purchase price of the 3M product. Except where prohibited by law, 3M will not be liable for any
indirect, special, incidental or consequential loss or damage arising from this 3M product, regardless of the legal
theory asserted.
3M is a trademark of 3M Company.
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Electrical Markets Division
6801 River Place Blvd.
Austin, TX 78726-9000
800 676.8381
FAX: 800 828.9329
www.3M.com/oem
Please recycle
© 3M 2010 All rights reserved
78-8129-9269-7 A
Shelf Life & Storage 3M™ Heat Shrink Tubing EPS-400 has a 10-year shelf life from date of manufacture
when stored in a humidity cont rolled storage (10°C/50°F to 27°C/80°F and <75% relative
humidity).
Availability Standard Packaging
Fou
r
-foot lengths. Cut pieces are available subject to factory quotation.
Please contact your local distributor; available from 3M.com/electrical [Where to Buy] or call
1-800-676-8381.
