At the initial-stage of understanding the customer’s required performance properties our Adhesive Representatives cover this partial checklist: a. What is the product’s function and the specific polymer usage therein? b. What are the specific substrates to be bonded? c. What mechanical forces, shock & vibration will the assembly be subjected to? d. What is the maximum service temperature range and normal operating temperature range for the component? Is it subjected to any thermal shock or cycling? e. Will the bond be exposed to any chemicals or sterilants? f. Do you need to meet any specific standards or approvals such as USP Class VI biocompatibility, FDA food grade, NASA low outgassing, or UL94V-0 flame retardant g. Are there any required optical characteristics? h. Do you require specific thermal and/or electrical properties? i. Are there specific viscosity requirements? j. What are the manufacturing constraints cure time, personnel, occupational safety etc. k. What mixing, dispensing and curing equipment do you already have? Do you have any surface preparation equipment?

Link: http://adteputek.com/b2evolution/blog2.php/2009/06/29/why-use-threadlockers

This variety is useful for all types of metallic fasteners to prevent their loosening due to shock and vibration. It can be used instead of conventional locking mechanisms like lock nut, spring washer, nylok nut (nut with nylon insert), tab washer, split pin, etc. The product also seals threads in addition to locking and prevents thread corrosion. Because of this advantage one could avoid seizing, the problem of removal at a later time.