1.1 Introduction
The designs and types of sealing methods for static duties cover a vast range. To
discuss the various types it is useful to divide them into two basic categories, seals and gaskets. Seals are typified by an elastomeric O-ring in a seal groove and gaskets by fibrous materials clamped between a pair of flanges.
Seals, within this context are designed such that they are expected to be self-energizing whereas it is normal for gaskets to be clamped with sufficient force that the pressure is resisted by the stored energy within the gasket. Hence the relative assembly load for a seal may be much lower than a gasket for the same duty.
There are many variations on these two individual themes and several that cover a grey area between them. The selection will depend on a number of factors. These include:

1.1介紹
靜態(tài)密封設(shè)計的方法和類型涵蓋了廣闊的范圍。為了討論其不同的使用方法，我們將其分為兩個基本的類別，即為密封件和墊圈。密封是典型的將一個O型橡膠圈在一個密封槽和墊圈之間裝夾著一對法蘭盤。
密封，在這方面是這樣設(shè)計的，他們預(yù)計將自激而這是正常的墊圈被夾有足夠的力量，抵制壓力是由儲存能量在墊片。因此相對裝配負荷密封可能遠低于墊片相同的職責(zé)。
有許多變化，這些個人的主題和幾個蓋之間的灰色地帶他們。選擇將取決于若干因素。