3M™ Scotchcast™ Re-enterable
Electrical Insulating Resin 2123
Data Sheet

Description

January 2015

3M™ Scotchcast™ Re-enterable Electrical Insulating Resin 2123 is a soft, two-partpolybutadiene resin encapsulant designed especially for re-enterable splice protection. It
is formulated for virtually every electrical application requiring a soft, re-enterable resinwith good handling and performance characteristics. This resin is also used as theinsulating material for cable splices operating at 1000 volts, and is rated for continuous
use at 194ºF (90ºC) with an overload rating of at 266ºF (130ºC). It may be stocked tocover most re-enterable resin needs, ending the need for multiple encapsulant
inventories.
Scotchcast resin 2123 is formulated with excellent wetting properties and low viscosity.
The resin flows well even at low temperatures, filling the enclosure and minimizing voids.
Resin Features:
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Bonds to all most cable jackets
Bonds to itself and existing 3M™ Scotchcast™ Resin 2112
Re-enterable
Available in two-part closed mixing pouch for easy mixing and pouring
Excellent multi-purpose moisture sealing resinRoom temperature cureFlexible
Low viscosity
Color: Translucent Amber

Agency Approvals& Self
Certifications

For RoHS information, please visit www.3M.com/ROHSResinApplications

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Replace or repair the jacket on both single and multi-core power cables
Seal the crotch or sheath when terminating multi-core cables
Potting cable or wire encasements
Potting cable fittings & splices
Potting printed circuit boards
Potting electrical junction boxes
Filling back shell connectors
Potting for motor controls
Potting of power supplies & ballasts

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Typical Physicaland ElectricalProperties

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.
Typical Value
US units (metric)
Translucent Amber
0 Shore A
3
3
0.53 oz/in (0,91 g/cm )2
10.7 psi (0,75 kg/cm )300%
1.6 lb/in @75ºF(585 N/m @ 24ºC)-108ºF (-78ºC)
37ºF (3ºC)
62 minutes

Physical Properties (Test Method)
ColorHardness (ASTM D2240)
Density (ASTM D792)
Tensile Strength (ASTM D412)
Elongation (ASTM D412)
Tear Strength (ASTM D624)
Glass Transition Temperature, Tg (DSC)
Maximum Exotherm, (100g) (ASTM D2471-99)
Gel Time (ASTM D2471-99)
Viscosity (cP) @ 77°F (25°C) (3M Method TM-173)
Part A Prepolymer
Part B Polyol

350 - 750
700 - 1,400

Specific Gravity (ASTM D891)
Part A Prepolymer
Part B Polyol

0.89
0.94

Moisture Absorption (ASTM D-570)

0.2%

2

Adhesion to Metals (lb/in ) (3M TM-456)
CopperBrassSteel
Aluminum

8.3
9.5
10.2
9.5Adhesion to Cable Jackets (lb/in2) (3M TM-457)

Vinyl
Neoprene
Nylon
XLPE

11.8
18.5
4.9
15.8

Electrical Properties (Test Method)

Typical Value

Insulation Resistance (MS 17000, Section 1182)
Dielectric Strength (ASTM D149)

11>4 x 10 ohms
>240 V/mil (9,5 kV/mm)
3.4 pf @ 73ºF (23ºC)
3.3 pf @194ºF (90ºC)
3.5% @ 73ºF (23ºC)
114.5% @194ºF (90ºC)

Dielectric Constant, @ 60Hz (ASTM D150)
Dissipation Factor, @ 60Hz (ASTM D150)

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3M™ Scotchcast™ Re-enterable Electrical Insulating Resin 2123
Usage & Handling

IMPORTANT:
Product should remain in the sealed container/envelope until ready to use. In cold
weather, warm closed mixing pouch to 60°F (16°C) or warmer before mixing. Keep in a
warm area, such as truck cab or inside pocket, until ready to use.
General Instructions
Closed Mixing Pouch: Tear open the protective envelope and remove the closed mixing pouch Before breaking the barrier, squeeze the bag to premix the separate
components.
 Firmly grasp each flat side of the bag near the center barrier, while pullingthe sides of the barrier apart and rolling the sides of thumbs through thebarrier. Break the barrier all the way across to the side seals.
 Alternately squeeze each end of the bag, forcing the resin back and forth(1 minute).
 Strip the resin from the corners of the bag and continue to mix until thecolor is uniform (additional 2 minutes, maximum).
 Clip off a corner of the closed mixing pouch and pour
Bulk Components:
Measure the appropriate quantity of each component as indicated in the table below, thenthoroughly mix to a uniform color and consistency prior to use. Opened bulk components
should be blanketed with nitrogen to prevent moisture contamination.

Component

ColorPart A
Part B

Pale Yellow
Amber

Weight Ratio
(w/w)
11

Volume Ratio
(v/v)
1
1.06

Typical Cure Time:Temperature
70°F (21°C)

Approximate Cure Time
24 hours

NOTE: Values are typical, not to be considered minimum or maximum.
Safety Precautions:
Read all Health Hazard, Precautionary and First Aid statements found in the Safety Data
Sheet (SDS) and/or product label of chemicals prior to handling or use.
Wear protective gloves when using this product.

F CAUTIONWorking around energized electrical systems may cause serious injury ordeath. Installation should be performed by personnel familiar with good safety
practice in handling electrical equipment. De-energize and ground all electricalsystems before installing product.

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3M™ Scotchcast™ Re-enterable Electrical Insulating Resin 2123
Shelf Life &Storage

3M™ Scotchcast™ Re-enterable Electrical Insulating Resin 2123 has a 2-year shelf life
from date of manufacture when stored in the factory-sealed packaging under humidity
controlled storage (10°C/50°F to 27°C/80°F and <75% relative humidity).

Availability

Please contact your local distributor or call 1.800.245.3573.

3M and Scotchcast are trademarks of 3M Company.

Important Notice

Warranty; Limited
Remedy; Limited
Liability

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 yourpurchase order, shall have no force or effect unless expressly agreed upon, in writing, by anauthorized officer of 3M.
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 IMPLIEDWARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If thisproduct is defective within the warranty period stated above, your exclusive remedy shall be, at3M’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 direct, indirect, special,incidental or consequential loss or damage arising from this 3M product, regardless of thelegal theory asserted.

3Electrical Markets Division
6801 River Place Blvd.
Austin, TX 78726-9000
800.245.3573
Fax 800.245.0329
www.3M.com/electrical

Please recycle© 3M 2015 All rights reserved
78-8126-6567-3 Rev D

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