Sleeve Design Filler

It depends upon:

• The filler material
• The line material
• The sleeve material
• The sizes of the line and the sleeve
• The actual temperature and the temperature swing range
• The thickness of the filler
• The thickness of the dike
• The modulus of expansion of the filler
• The materials wetting the filler
• The difference in head between the inside and the outside of the dike
• The amount of movement of the inner line relative to the sleeve
• And a host of other things that cannot be seen from here and are not listed in the original post.

Rather than re-invent the proverbial wheel why not just copy an installation locally that works, and re-use it <rhetorical question - NNTR>?

You may want to look into "Expandable Waterstops". Do a Google Search for them. There are many many manufacturers of these types of waterstops.

Here is a Link to one of my favorites that I have specified over the years for pipe penetrations in hydraulic structures:

http://usa.sika.com/en/solutions_products/02/waterproofing/02a015sa99.html