O — Rings offer the designer an efficient and economical
sealing element for a wide range of static or dynamic
Inexpensive production methods and its ease of use have
made the O — Ring the most widely used seal.
A wide choice of elastomer materials for both standard and
special applications allow the O — Ring to be used to seal
practically all liquid and gaseous media.
O — Rings are vulcanized in molds and are characterized by
their circular form with annular cross section. The
dimensions of the O — Ring are defined by the inside
diameter d 1 and the cross section d 2 (Figure 1).
Cross sections of approximately.014 to 1.575 inches (0.35 to
40 mm) and inside diameters up to 200 inches (5,000 mm)
and more are available.