Product Description
3 M™N S T Tubing provides superior cut-
through and abrasion resistance and is
u n a ffected by common fluids and
solvents. Resistance to oils is excellent.
The tubing maintains flexibility at low
temperatures and can be readily marked
by hot-stamp and print-wheel methods.
When heated in excess of 135°C (275°F)
N S T Tubing rapidly shrinks to a skintight
fit. NSTis rated for continuous operation
from –70°C (–94°F) to 121°C (250°F).
NST Tubing
Modified Chlorinated Polyolefin (Neoprene®)
Data Sheet
Typical Applications
N S T Tubing is recommended for
applications requiring a tough, highly
flexible covering. It is particularly useful
for fabrication and repair of flexible
harnesses and wire bundles and for
covering hydraulic couplings. Its superior
mechanical properties and broad
operating temperature range make it an
ideal choice for jacketing cable harnesses
and custom-made cables that must
operate in severe environmental
c o n d i t i o n s .
Shrink Ratio
N S T Tubing has a 2:1 shrink ratio. W h e n
freely recovered, the tubing will shrink to
50% of its as-supplied internal diameter.
The recovered wall thickness is
proportional to the degree of recovery.
Standard Color
B l a c k .
Standard Packaging
S p o o l s .
Ordering Information
Order NSTTubing by product name, size
equivalent to the expanded inside
d i a m e t e r, package type and color. A l w a y s
order the largest size that will shink
snugly over the component to be
covered. When ordering NST Tu b i n g ,
please indicate the applicable
specification required.
Example: NST, 3/16", spools, black.
Neoprene®is a trademark of E.I. du Pont de Nemours & Co., Inc.
R e c o v e re d
Wa l l
O r d e r i n g Expanded I.D. R e c o v e red I.D. T h i c k n e s s
S i z e ( M i n i m u m ) ( M a x i m u m ) ( N o m i n a l )
i n . ( m m ) i n . ( m m ) i n . ( m m )
1 / 8 . 1 2 5 ( 3 , 1 8 ) . 0 7 2 ( 1 , 8 3 ) . 0 3 0 ( 0 , 7 6 )
3 / 1 6 . 1 8 7 ( 4 , 7 5 ) . 1 0 6 ( 2 , 6 9 ) . 0 3 5 ( 0 , 8 9 )
1 / 4 . 2 5 0 ( 6 , 3 5 ) . 1 2 5 ( 3 , 1 8 ) . 0 3 5 ( 0 , 8 9 )
3 / 8 . 3 7 5 ( 9 , 5 3 ) . 1 8 7 ( 4 , 7 5 ) . 0 4 0 ( 1 , 0 2 )
1 / 2 . 5 0 0 ( 1 2 , 7 0 ) . 2 5 0 ( 6 , 3 5 ) . 0 4 8 ( 1 , 2 2 )
5 / 8 . 6 2 5 ( 1 5 , 8 8 ) . 3 1 2 ( 7 , 9 2 ) . 0 5 2 ( 1 , 3 2 )
3 / 4 . 7 5 0 ( 1 9 , 0 5 ) . 3 7 5 ( 6 , 9 9 ) . 0 5 7 ( 1 , 4 5 )
7 / 8 . 8 7 5 ( 2 2 , 2 3 ) . 4 3 7 ( 11 , 1 0 ) . 0 6 5 ( 1 , 6 5 )
11 . 0 0 0 ( 2 5 , 4 0 ) . 5 0 0 ( 1 2 , 7 0 ) . 0 7 0 ( 1 , 7 8 )
1 - 1 / 4 1 . 2 5 0 ( 3 1 , 7 5 ) . 6 2 5 ( 1 5 , 5 4 ) . 0 8 7 ( 2 , 2 1 )
1 - 1 / 2 1 . 5 0 0 ( 3 8 , 1 0 ) . 7 5 0 ( 1 9 , 0 5 ) . 0 9 5 ( 2 , 4 1 )
1 - 3 / 4 1 . 7 5 0 ( 4 4 , 4 5 ) . 8 7 5 ( 2 2 , 2 3 ) . 1 0 7 ( 2 , 7 2 )
22 . 0 0 0 ( 5 0 , 8 0 ) 1 . 0 0 0 ( 2 5 , 4 0 ) . 11 0 ( 2 , 7 9 )
33 . 0 0 0 ( 7 5 , 2 0 ) 1 . 5 0 0 ( 3 8 , 1 0 ) . 1 2 5 ( 3 . 1 8 )
Standard Sizes and Dimensions
P h y s i c a l
Tensile Strength 2100 PSI
Ultimate Elongation 5 0 0 %
Longitudinal Change +1, -10%
Specific Gravity 1 . 3
Operating Te m p e r a t u r e –70°C to
R a n g e +121°C
Shrink Te m p e r a t u r e 135°C
( M i n . ) ( 2 7 5 ° F )
Low Temperature Flexibility
(4 hrs. @ –70°C) No cracking
F l a m m a b i l i t y S e l f - e x t i n g u i s h
E l e c t r i c a l
Dielectric Strength 800 V/mil
Volume Resistivity 1 01 2 o h m - c m
C h e m i c a l
Corrosion Resistance N o n -
c o r r o s i v e
Fuel & Oil Resistance E x c e l l e n t
Solvent Resistance G o o d
Abrasion Resistance E x c e l l e n t
Acids & A l k a l i s
R e s i s t a n c e E x c e l l e n t
Typical Properties
Technical information provided consists of typical product data and
should not be used for specification purposes. Unless otherwise
noted, all tests are performed at room temperature.
Applicable Specification
MIL-R-46846, Type I, Class 1; MIL-DTL-23053/1,
Class 1, 2; AMS-3623
( S C - X - 1 5 112 available on re q u e s t )
Limited Warranty – 3M expressly warrants that for a period of ninety days from the date of purchase, 3M static control products will be free of defects in
materials (parts) and workmanship (labor). Defects occurring during the warranty period will be repaired or products will be replaced at 3M’s option and
expense, if 3M receives notice during the warranty period. Defective products must be returned to 3M with proof of purchase date.
Warranty Exclusions –THE FOREGOING EXPRESS WARRANTYIS MADE IN LIEU OF ALLOTHER PRODUCT WARRANTIES, EXPRESS AND IMPLIED,
INCLUDING FITNESS AND MERCHANTIBILITY. The express warranty will not apply to defects or damage due to accidents, neglect, misuse, alterations,
operator error, or failure to properly maintain, clean, or repair products.
Limit of Liability– In no event will 3M or Seller be responsible or liable for special, incidental, or consequential losses or damages, whether based in tort or
contract. Fulfillment of 3M’s warranty obligations will be Customer’s exclusive remedy and 3M’s and Seller’s limit of liability for any breach of warranty or otherwise.
For your nearest distributor or to order, call 1-800-328-1368
3M Electrical Specialties Division
6801 River Place Blvd.
Austin, TX 78726-9000 © 3M March 1997
