It is no longer a requirement under the Companies Act, Cap. 50 or Constitution of a company to have them. However, most companies keep a common seal for use overseas if need be. It should be kept at the registered address.
Common seal is normally used for conveyancing documents or on deeds. Likewise, it can be used on contracts or agreement. There is also an official seal that can be used overseas, and it is required to have a directors’ resolution in writing to approve the use of such seal overseas.