Hi @Tides,
Due to the fickle nature of chemical reactions in a variable world, we can’t meaningfully provide an official depth rating for a general-purpose and user-sealed product like a potted penetrator. The depth capacity is dependent on the interface strengths between the potting compound, the cable jacket, and the aluminium walls of the penetrator, which depends on a variety of factors, including
- the materials involved, and their chemical compatibilities
- surface treatment of the cable jacket and penetrator wall
- impurities, dirt, skin oils, etc that reduce bond strength
- temperature and pressure during potting and setting (bubbles?)
- correct seating of cable jacket against penetrator shoulder
- length of bond
- e.g. does the potting compound fill the head and extend into the throat?
It’s also relevant to consider storage and operating conditions, whereby
- high temperatures (e.g. from extended direct sunlight exposure, or hot water) can degrade/weaken potting compound, and may cause thermal stresses from uneven expansion
- strong jerks on the cable may shear the seal
- if a non water-blocked cable gets cut, water can enter through the cable (true of any penetrator)
For reference,
It’s not impossible for a potted penetrator to withstand significant depths, but unfortunately it’s difficult to ascertain the depth capacity of a given potting without highly controlled installation and operating conditions, or actually testing it.