Legal analysis: the rental contract has legal effect without seal. If the content of the contract is legal and it is not sealed at last, it is also valid for both parties to sign or press their fingerprints, and the signature and seal have the same legal effect. Once the contract is sealed or signed by both parties, it has legal effect. Note that it is "or", not "and". However, considering the probative force of the contract itself, you need to provide other evidential materials, including the receipt of rent deposit and a copy of the other party's ID card. This will be more explanatory, otherwise a simple signature is hard to convince.

Legal basis: Article 703 of the Civil Code is a lease contract in which the lessor delivers the lease item to the lessee for use and profit, and the lessee pays the rent.

Article 704 of the Civil Code generally includes terms such as the name, quantity, purpose, lease term, rent, payment term and method, and maintenance of the leased property.

Article 705 of the Civil Code: The lease term shall not exceed 20 years. More than twenty years, the excess part is invalid.

At the expiration of the lease term, the parties may renew the lease contract; However, the agreed lease term shall not exceed twenty years from the date of renewal.