Stop loading or using an undermount sink that is separating from the countertop, and have its support and sealed joint assessed before a reseal. A bead of caulk cannot establish that failed mounting hardware has been repaired. Match the actual sink and countertop system, restore approved support, and inspect attached plumbing for strain and leaks before returning it to use.
Separate the sealed edge from the mounting system
A growing gap is a support and sealing problem to assess before the sink is filled again. Stop using the sink and its disposal, avoid adding weight, and arrange inspection. Do not lean on it, pull it upward by connected piping or try to hold it in place by tightening a drain joint.
The cited Elkay stainless-undermount instructions show silicone along the sink flange and separate mounting brackets and fasteners. They require alignment and controlled tightening, with a warning against overtightening. That assembly illustrates why smearing caulk across a visible gap does not verify the brackets or countertop attachment.
Elkay's ELUH281610 specification identifies it as an undermount model with brackets sold separately. A sink supplied without its complete mounting hardware is not proof that sealant alone is the approved installation. Follow the sink and support-system documentation for the actual material and model.
Have the whole connection inspected
Ask the installer to assess brackets or other specified supports, their attachment points, countertop condition and the sink flange. Water at the joint can be a sealing symptom, but it does not identify whether a fastener, support or surface failed first.
The Elkay instructions recommend a professional experienced installer and limit their stated fastening arrangement to a solid-surface countertop. Another sink or countertop can need another support design. Do not add a generic screw pattern, drill blindly into the countertop, or transfer this stainless guide to a heavy cast-iron or fireclay bowl.
Check the plumbing for movement and leaks
The disposal, drain and faucet connections can be affected if the sink moves. Look from a safe position for a displaced pipe or escaping water; do not reach beneath an unstable assembly. Stop the accessible supply safely if a leak is spreading and have the connection assessed.
Water under a sink has a separate leak-location checklist. Drying the cabinet or stopping one drip does not establish that the hanging fixture is supported properly.
Return to use after the actual repair
The repair should restore the approved support, alignment and sealing arrangement, including any sealant cure requirements. Have disturbed water and drain connections checked before normal use. A temporarily closed gap does not demonstrate a completed structural attachment.
Kitchen sink installation covers the original connections. Kitchen sink materials explains why weight and mounting differ. Keep the actual sink, support parts and repair findings together so future work does not repeat an incompatible mounting method.