21 Pa. Stat. § 8
All deeds to be recorded in pursuance of this act, whereby any estate of inheritance in fee simple shall hereafter be limited to the grantee and his heirs, the words grant, bargain, sell, shall be adjudged an express covenant to the grantee, his heirs and assigns, to-wit: That the grantor was seized of an indefeasible estate in fee simple, freed from incumbrances done or suffered from the grantor (excepting the rents and services due to the lord of the fee), as also for quiet enjoyment against the grantor, his heirs and assigns, unless limited by express words contained in such deeds, and that the grantee, his heirs, executors, administrators and assigns, may in any action assign breaches, as if such covenants were expressly inserted: Provided always, That this act shall not extend to leases at rack-rent, or to leases not exceeding one and twenty years, where the actual possession goes with the lease.
21 P.S. § 8