1.0 General
1.1 The 3M Scotchcast Splice Kit 8980 Series has six rigid
body closure sizes available. The closure kit includes spacer
webbing to keep the splice bundle away from the closure
wall and allow the encapsulating compound to flow around
the splice.
1.2 3M High Gel Encapsulant is a two-part, re-enterable non-
polyurethane encapsulating compound.
1.3 3M Scotchcast Compound 4407 is a two-part, non-
re-enterable polyurethane encapsulating compound.
1.4 This practice describes the application of 8980 series kits
with high gel or 4407 encapsulating compound (using the
steps applicable to 4407 kits). See Kit Selection Guide
below for individual kit capabilities.
3
Scotchcast
Splice Encapsulation Kits 8980 Series
(with 3M High Gel Encapsulating Compound or
3M Scotchcast Encapsulating Compound 4407)
January 2007
78-8097-8956-9-F
Kit Selection Guide
Kit Max. Pair
Count †
Max. Cable
O.D.
Max. Splice
O.D.
With High Gel Re‑enterable Compound Approx. Inside
Closure Dia.
8981/High Gel* 4/24 0.625" (16 mm) 1.5" (38 mm) (1) “A” Size Uni-pack 82 g (90 ml) 0.5" (13 mm)
8982/ High Gel** 18/24*** 1" (25 mm) 5.25" (133 mm) (1) “E” Size Uni-pack 266 g (292 ml) 0.9" (22mm)
8983/High Gel 50/24 1.5" (38 mm) 9.75" (248 mm) (1) “D” Size Uni-pack 600 g (659 ml) 1.25" (32 mm)
8984/High Gel 100/22 2" (51 mm) 9" (228 mm) (2) “D” Size Uni-pack 1200 g (1318 ml) 2.25" (58 mm)
8985/High Gel 400/22 2.375" (60 mm) 17" (431 mm) (5) “D” Size Uni-pack 2400 g (3295 ml) 3.5" (90 mm)
8986/High Gel 600/22 3.33" (86 mm) 17" (431 mm) (10) “D” Size Uni-pack 6000 g (6590 ml)**** 4.75" (120 mm)
*Intended for use on single cables only ***On double sheath cable 14/24 is recommended maximum
**Not intended for use with MS2™ Modules. ****Additional compound may be required depending on cable size.
Kit Max. Pair
Count †
Max. Cable
O.D.
Max. Splice
O.D.
With Scotchcast 4407 Encapsulating
Compound
Approx. Inside
Closure Dia.
8981-07* 4/24 0.625" (16 mm) 1.5" (38 mm) (1) “A” Size Uni-pack 94 g (90 ml) 0.5" (13 mm)
8982-07* 18/24 1" (25 mm) 5.25" (133 mm) (1) “E” Size Uni-pack 300 g (290 ml) 0.9" (22mm)
8983-07 50/24 1.5" (38 mm) 9.75" (248 mm) (1) “D” Size Uni-pack 675 g (660 ml) 1.25" (32 mm)
8984-07 100/22 2" (51 mm) 9" (228 mm) (2) “D” Size Uni-pack 1350 g (1320 ml) 2.25" (58 mm)
8985-07 400/22 2.375" (60 mm) 17" (431 mm) (5) “D” Size Uni-pack 3375 g (2640 ml) 3.5" (90 mm)
8986-07 600/22 3.33" (86 mm) 17" (431 mm) (10) “D” Size Uni-pack 6750 g (6600 ml)** 4.75" (120 mm)
*The 8981-07 and the 8982-07 kits are intended for use on single sheath cables only. † Maximum pair count with 3M Scotchlok Connectors UY or 3M MS2™ Modules.
**Additional compound may be required depending on cable size. †† Inside closure diameter measured at center, minus spacer webbing.
3.0 Cable Preparations
3.1 Prepare the cables. Cut shield flush with the outer sheath
and scuff the inner sheath (on double sheath cables).
3M Scotchcast Kit Number Splice Opening
8891 1.5" (38 mm)
8982 5.25" (133 mm)
8983 9.75" (248 mm)
8984 9" (228 mm)
8985 17" (431 mm)
8986 17" (431 mm)
Clean and Scuff
Inner Sheath
Core Wrapper or
Inner Sheath
8981 1/2" (13 mm)
8982-86 1" (25 mm)
873510
Clean and Scuff
Inner Sheath
3.2 Filled Cables: For best results, clean filled cables
thoroughly before encapsulating.
Note: Carefully follow health, safety and environmental
information given on cable cleaner label or Material Safety
Data Sheet.
3.3 For 8982-8986 kits, insert the shield connector between
the shield and the inner sheath (or core wrapper on single
sheath cables). On 8982-8983 kits, make certain the shield
connector studs are aligned with “bubbles on the side of
the mold body.
Note: Cables show 4462-FN shield connector.
873511
3.4 For cables less than 3/4" (19 mm) in diameter, cut a 1"
(25 mm) slit in the sheath opposite the connector location.
Then complete the procedure.
1" (25 mm) Slit
3.5 Install shield bond connector and bond bar. Then install
one nut securely onto shield bond connector stud.
Note: Torque 4460 series shield connector nuts to 30-35 in-
lbs (3.4-4.0 kgm)
Torque 4462 series shield connector nuts to 45 ± 5 in-
lbs (5.2 ± 0.6 kg•m).
Bond Bar
Connector Top
Connector Bottom
2.0 Kit Contents
* in 4407 kits; in High Gel kits; X not applicable
Kit Contents 8981 8982/8983 8984 8985/8986 Accessories Required:
Splicing connectors
Additional rubber tape, if needed
"B" sealing tape, if needed
Visually inspect all components.
If any component is missing or
appears damaged, do not install.
Call 3M customer service at
1-800-426-8688 for a replacement
product.
“closure halves, one each” * * * *
pour spouts (2) * * X X
strain relief bar X X (2)
bonding strap X X X
service wire connector (4464) X X X
spacer tube X
spacer web * * * *
DR tape X
88T vinyl tape X
B sealant tape strips X
shield bond connectors (4460-D)(2) (4460-D)(2) (4460-D)(2) (4462-FN)(4)
compound * * * *
sheath scuff X
cable ties (2)
cover X X * *
#23 tape strips (3) * * * *
fiberglass strip (2) X X * *
3.6 Cut off excess stud.
Cut Off
Excess
3.7 For double sheath cables, build sealing collars on the inner
sheath. Each sealing collar consists of one wrap of 3/4"
(19 mm) wide B sealing tape cut in half 3/8" (9 mm) and
completely overwrapped with at least two turns of 3/4" (19
mm) highly stretched DR tape, white side out.
3.8 For 3M™ Scotchcast™ Kits 8981-8986, continue shield
by installing the bonding strap or strain bar(s) across the
splice opening.
873511
3.9 Build outer sheath sealing collars just beyond the nose of
the shield bond connector—each sealing collar consists of
one 3/4" (19 mm) wrap of B sealing tape cut in half 3/8" (9
mm) and completely overwrapped with at least two turns of
highly stretched DR tape, white side out. (Collars must be
covered by closure).
3.10 For multiple cables:
(a) Center a closure-half over the splice and mark the
closure end location on the cables.
(b) Seal cables together with B sealing tape filling all
voids between the cables. Trim closure ends to fit
build up.
(a) (b)
4.0 Splice Conductors per company
practice
5.0 Closure Assembly
5.1 3M™ Scotchcast Kits 8981-8986
Clean and scuff completely around the cables sheath for
distances indicated using sheath scuff.
Clean and
Scuff 6" (152 mm)
Clean and
Scuff 6" (152 mm)
5.2 8981 Closure
Secure one end of spacer web to the cable with a cable tie.
Spiral wrap spacer web tightly around splice bundle. Secure
end to cable with cable tie.
Cable Tie
Spacer Web
Cable Tie Cable Tie
Spacer Web
5.3 8982-8986 Closures
Install spacer web and secure in place with cable ties.
Note: Do not overlap spacer web.
Cable Ties
Spacer Web
5.4 Center the closure over the splice opening. For 8981 and
8983 kits, position the bubbles over the shield connectors.
5.5 Trim closure ends so that they loosely fit on the cable outer
sheath.
3M Scotchcast Kits 8981-8983
3M Scotchcast Kits 8984-8986
5.6 Install closures.
Align the tongue and groove and snap the closure halves
together. HINT: Pliers may be used to snap the closure
halves together, but be sure that the tongue and groove are
properly engaged before crimping the flanges.
NOTE TONGUE AND GROOVE
873512
5.7 Wrap the closure ends with DR or 23 rubber tape provided
in the kit.
5.8 Install funnels on 3M™ ScotchcastKits 8981-8983.
6.0 Closure Filling
6.1 Position closure:
8981-8983 kits: Slightly incline closure 1/2" (13 mm).
8984-8986 kits: Keep closure level.
6.2 Mix compound per instructions on Uni-pack container
guard bag.
Note: For health, safety and disposal information refer to
compound label or Material Safety Data Sheet for
encapsulating compound being used.
6.3 Pour compound:
8981-8983 kits: Pour compound into closure through
funnel on low end only. Pour until compound fills closure
and reaches top of funnel on lower end.
8984-8986 kits: Pour compound to top of air vents.
Replace cover onto pour opening. Closure can be buried
immediately.
7.0 Re-entry of Re-enterable
Compound Splice
7.1 Remove rubber tape strips from closure ends.
7.2 Grip or pry out closure end and pull closure off
encapsulated splice.
7.3 Remove spacer web from splice and discard. DO NOT
REUSE SPACER WEB. Remove as much encapsulant as
possible.
7.4 After completion of repair or modification, reassemble
closure according to procedure outlined in Closure
Assembly section. Closure halves may be reused.
Note: Spacer web in roll form is available in 3"
(76 mm) and 6" (152 mm) x 20' (6 m) rolls (4430). Be
sure that the spacer web does not block the fill ports.
Do not overlap spacer web.
7.5 Fill closure with new encapsulant (high gel) as outlined in
Closure Filling. The new high gel encapsulant will bond to
the original encapsulant left in the splice.
7.6 Closure can be buried immediately.
Note: 3M Scotchcast Encapsulated Closures 4407 are not
Re-enterable.
Gel Time
(Hours)
3
2
1
40°F
4°C
60°F
16°C
80°F
27°C
100°F
38°C
120°F
49°C
High Gel
Gel Time vs. Temperature
Ambient Temperature
3
Communication Markets Division
3M Telecommunications
6801 River Place Blvd.
Austin, TX 78726-9000
800.426.8688
Fax 800.626.0329
www.3MTelecommunications.com
Please recycle. Printed in USA
© 3M 2007. All rights reserved.
78-8097-8956-9-F
Important Notice
3M MS2™ splicing rigs, tools and modules are engineered to work together to achieve consistently superior performance in the field. Modules from other manufacturers may not
meet the tight quality tolerances of 3M modules and may damage the calibration and performance of a 3M rig or tool. Therefore, the published 3M warranty does not extend to any
3M modules spliced in rigs or tools not made by 3M. The warranty on 3M MS2 splicing rigs and Scotchlok splicing tools can also be violated if used on non-3M modules.
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 guar-
anteed. 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
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unless expressly agreed upon, in writing, by an authorized officer of 3M.
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This product will be free from defects in material and manufacture for a period of one (1) year from 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
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