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3M
™
Heat Shrink Tubing EPS-400
Adhesive-Lined, 4:1, Semi-Rigid, Polyolefin
Data Sheet September 2015
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 adhesive.
The heat-shrinkable outer wall is selectively cross-linked, while the adhesive
maintains high flow and excellent adhesion characteristics.
When heated in excess of 121ºC (250ºF), EPS-400 tubing rapidly shrinks to a
skintight fit, forcing the melted adhesive to flow and cover the substrate. Upon
cooling, the adhesive solidifies, forming a permanent, non-drying, flexible and water
resistant barrier. Adhesive reflow will occur at temperatures above 80ºC (176ºF).
Agency Approvals &
Self Certifications
Meets requirements of:
UL Recognized, UL File E-157227 at 600 Volts and 125 ºC maximum
CSA Recognized, CSA File LR38227
Applications
EPS-400 tubing offers excellent environmental protection for electronic components,
wire splices, wire bundles and harness breakouts. Automotive, truck and marine
wire splices and harness breakouts are also 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 shrink
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 -55ºC (-67ºF) to 110 ºC (230ºF), with a
shrink temperature minimum of 121ºC (250 ºF).
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)