What date should be checked before using an adhesive to ensure product performance?

The expiration date is critical to check before using an adhesive to ensure product performance because this date indicates the time frame during which the manufacturer guarantees the adhesive's effectiveness. Over time, the chemical properties of adhesives can change, potentially degrading their ability to bond effectively. Using an adhesive past its expiration date may result in compromised performance, leading to structural failure or decreased durability of the installed anchor.

The manufacturing date, while informative about when the product was made, does not directly indicate its usability. The batch number is useful for quality control and traceability but does not provide information about the adhesive's condition or performance capability at the time of use. The delivery date primarily relates to logistics and does not affect the adhesive's chemical integrity. Therefore, confirming the expiration date is essential for ensuring that the adhesive used is still viable and will perform as expected.