That is exactly what the RCC claims as stated in its own catechism. The RCC claims that salvation is through it as the true church established by Jesus Himself and that outside the church, there is no salvation, that it is the only means by which someone can come to God.
Why are you disagreeing with the CCC?
http://www.vatican.va/archive/ENG0015/__P29.HTM
816 "The sole Church of Christ [is that] which our Savior, after his Resurrection, entrusted to Peter's pastoral care, commissioning him and the other apostles to extend and rule it.... This Church, constituted and organized as a society in the present world, subsists in (subsistit in) in) the Catholic Church, which is governed by the successor of Peter and by the bishops in communion with him."267
The Second Vatican Council's Decree on Ecumenism explains: "For it is through Christ's Catholic Church alone, which is the universal help toward salvation, that the fullness of the means of salvation can be obtained. It was to the apostolic college alone, of which Peter is the head, that we believe that our Lord entrusted all the blessings of the New Covenant, in order to establish on earth the one Body of Christ into which all those should be fully incorporated who belong in any way to the People of God."268
822 Concern for achieving unity "involves the whole Church, faithful and clergy alike."287 But we must realize "that this holy objective - the reconciliation of all Christians in the unity of the one and only Church of Christ - transcends human powers and gifts." That is why we place all our hope "in the prayer of Christ for the Church, in the love of the Father for us, and in the power of the Holy Spirit."288
"Outside the Church there is no salvation"
846 How are we to understand this affirmation, often repeated by the Church Fathers?335 Re-formulated positively, it means that all salvation comes from Christ the Head through the Church which is his Body:
Basing itself on Scripture and Tradition, the Council teaches that the Church, a pilgrim now on earth, is necessary for salvation: the one Christ is the mediator and the way of salvation; he is present to us in his body which is the Church. He himself explicitly asserted the necessity of faith and Baptism, and thereby affirmed at the same time the necessity of the Church which men enter through Baptism as through a door. Hence they could not be saved who, knowing that the Catholic Church was founded as necessary by God through Christ, would refuse either to enter it or to remain in it.336
The Church, like all churches, has declared that that certain practices and beliefs will result in damnation, but doesn't claim the ability to enforce it.
Sure it does. And the Catholic church and Catholics use these verses to back that up.
Matthew 16:19 I will give you the keys of the kingdom of heaven, and whatever you bind on earth shall be bound in heaven, and whatever you loose on earth shall be loosed in heaven.”
Matthew 18:18 Truly, I say to you, whatever you bind on earth shall be bound in heaven, and whatever you loose on earth shall be loosed in heaven.
The Catholic church does indeed do exactly that, claim to have the power to send people to hell and keep them out of heaven and enforce it, claiming that Jesus gave them that authority.
You want to try again with something people can actually believe?
That is a frequent phenomena among FRoman Catholics. Each FRoman Catholic is his/her own pope.
And they still expect us to take them seriously after they make comments that are so starkly contrary to what the RCC actually professes.