from Modern Catholic Dictionary by John A. Hardon, S.J. Doubleday & Co., Inc. Garden City, NY 1980
 
Sacramental. Objects or actions that the Church uses after the manner of sacraments, in order to achieve through the merits of the faithful certain effects, mainly of a spiritual nature. They differ from sacraments in not having been instituted by Christ to produce their effect in virtue of the ritual performed. Their efficacy depends not on the rite itself, as in the sacraments, but on the influence of a prayerful petition; that of the person who uses them and of the church in approving their practice. The variety of sacramentals spans the whole range of times and places, words and actions, objects and gestures that, on the Church's authority, draw not only on the personal dispositions of the individual but on the merits and prayers of the whole Mystical Body of Christ.
The Blessed Sacrament is the consecrated host (circular piece of unleavened bread) which is the body, blood, soul, and divinity of Jesus Christ, second person of the Trinity. Exposition of the Blessed Sacrament is a ceremony during which the Blessed Sacrament is set by the priest into a monstrance for adoration. The monstrance is a blessed, golden container used to hold the Blessed Sacrament. In its center is a circular space where the Blessed Sacrament, in a glass case, is set. Around this center is gold, usually sculpted into long thin pieces that radiate like light from the center where the Blessed sacrament is. This container for the Blessed Sacrament is held upright on a golden pedestal, which is part of the monstrance. During the ceremony called Exposition of the Blessed Sacrament, the priest exposes the host by setting it in the monstrance, and the monstrance is set on the altar in the church. Thus people can come and kneel and adore Jesus Christ in the Blessed Sacrament, which is held exposed in the monstrance.
Yes, blessed ashes are a sacramental.
Servants of the Blessed Sacrament was created in 1858.
Margaret of the Blessed Sacrament was born in 1590.
Margaret of the Blessed Sacrament died in 1660.
Blessed Sacrament Huguenot was created in 1959.
Roman Catholic AnswerPerpetual Eucharist Adoration is 24/7 exposition of the Blessed Sacrament with at least one adorer always present before Our Blessed Lord in the Sacrament of the Altar.
sacramental
Augustin-Marie of the Blessed Sacrament died in 1871.
Augustin-Marie of the Blessed Sacrament was born in 1820.
Servants of the Most Blessed Sacrament was created in 1858.
Cathedral of the Most Blessed Sacrament was created in 1905.