Backing Rings. When joining two pipes, ensuring that they are properly aligned, held together, and to prevent leaks, a small piece of material called a backing ring is necessary. Backing rings can be either round, or square and are made typically from rubber or a metal such as chrome, carbon steel, or aluminum.
O n March 6, 1961 President John F. Kennedy issued Executive Order 10925, which included a provision that government contractors take affirmative action to ensure that applicants are employed, and employees are treated during employment, without regard to their race, creed, color, or national origin..he intent of this executive order was to affirm the government's commitment to equal opportunity for all qualified persons, and to take positive action to strengthen efforts to realize true equal opportunity for all. This executive order was superseded by Executive Order 11246 in 1965.
The purpose of affirmative action is to establish fair access to employment opportunities to create a workforce that is an accurate reflection of the demographics of the qualified available workforce in the relevant job market.