Unprotected splice

[Speedcrab]

The plastic around this sewn eye fell off?I picked it up today and it just wasn't there anymore.

What can I put around it to protect the threads? Do I even need to?

 

[Njdelaney]

Electrical tape, heat shrink tubing, duct tape, friction tape, rubber cement, or nothing at all. Heat shrink tubing can be bought at most auto parts stores and 3/4 is probably what you want for that particular cordage. If you have any of those other things at your house already though, use that instead.

 

[Brocky]

If going with shrink tube, the type with glue is best for holding. Another option that Petzl now uses is to put polyurethane on them.

 

[climbstihl]

If you want to protect it, you already got good recommendations. I just wanted to add that Teufelberger ships all of their eye to eyes like that, so I wouldn't worry about it. I think the hitch cord will be worn out long before the stitching.

 

[Phil]

If you use heat shrink get clear. That will allow an inspection of the stitching which is the important part of the eye.

 

[knudeNoggin]

Or, more rope-y/knotty, you could bind the sewn part with mason line or 30#? fishline (something that comes to about the same thickness, i.e.) as a seizing --could be a series of several multiple(-wraps) Strangle knots.
Ah, here's a (dark) photo of some end whippings with multi-strangles + sailmaker's whipping finish.

https://igkt.net/sm/index.php?action=dlattach;topic=2225.0;attach=3713;image

In these, I put in an extra buried x-ing of the whipping ends --there's usually just one--; this influenced the length, finding that for mason line about 5 overwraps works and in that monofilament it was 7-8. A more traditional sort of seizing/whipping could do as well. (depends on how much fun you find it!)

*kN*