3M 7010401059 3M, Heat Shrink Heavy-Wall Cable Sleeve Itcsn 0800 Black 6-In Piece

The ITCSN 0800 sleeve goes on at 0.8 in (20.3 mm) inside diameter and recovers down to 0.2 in (5.1 mm). That 4:1 recovery means it slides over connectors and lugs up to about 0.8 in across and still grips tight on cable as small as 0.2 in. If your splice body is larger than 0.8 in at its widest point, this size won't pass over it and you need a larger ITCSN size.

Yes. The ITCSN 0800 is rated for insulating secondary splices and for direct buried, submersible and dig-in repair work, which is what the heavy-wall cross-linked polyolefin construction and the internal adhesive style of jacket sleeve are built for. It also resists abrasion, corrosion and chemicals, so it holds up in buried duct and manhole conditions.

That is exactly the application it is listed for. The ITCSN 0800 is intended for insulating secondary splices, connections and terminations, including dig-in repairs on buried cable. Size it by the connector: the sleeve must start larger than the widest point of the made-up splice (0.8 in max) and the cable it seals onto at each end must be at least 0.2 in in diameter so the sleeve grips rather than over-recovering.

Service range is -67 to 230 degrees F (-55 to 110 degrees C). The 110 C top end covers normal secondary cable operating temperature and typical overload heating; it is not intended for sustained service above that. The cold end means it stays flexible and won't crack in outdoor northern winter installs.

It is UL Listed and CSA Certified, and compliant with RoHS 2011/65/EU. That covers the documentation most utility, municipal and institutional inspectors ask for on a secondary splice insulation product, and the CSA mark means it carries into Canadian jobs as well.

The 3M 7010401059 is a single 6 inch piece of ITCSN 0800 sleeving, not a spool or a multi-pack. Order one piece per splice or termination you are covering, and remember the sleeve has to slide onto the cable before the connection is made up.

Thin-wall tubing is essentially an insulating skin for indoor, dry, low-abuse work. The ITCSN 0800 is a heavy-wall cross-linked polyolefin sleeve with a much thicker recovered wall, so it takes abrasion, corrosion and chemical exposure and is qualified for direct buried, submersible and dig-in repairs. If the splice is going in a trench, a wet vault, or anywhere it can get dragged or backfilled against rock, heavy-wall is the type to use. For a dry panel or control cabinet, thin-wall is plenty.

The sleeve is black cross-linked polyolefin with stated resistance to abrasion, corrosion and chemicals, and it is rated from -67 to 230 degrees F, so it handles outdoor temperature swings. For above-grade exposed runs, keep the whole splice within that temperature band and make sure both ends of the sleeve land on cable jacket at least 0.2 in in diameter so it seals down properly.