These days, we can find microcapsules in almost every industrial sector, where they take numerous roles. However, dispensing these fragile materials can be a problem since clearly it is important that the microcapsules be undamaged by the dispensing process. In adhesive technology, microcapsules can fulfil several functions. For example, microcapsules may be an integral part of the control of reaction and curing processes. Some anaerobic “threadlocking” adhesives contain microcapsules.