Almost every industry
operates key mechanical equipment which relies on the
proper functioning of a variety of precisely
engineered tensioned, and non-tensioned and industrial
rings. These critical components are found in a wide
range of operations. From slow-moving hydraulics
through compressors and pumps to rapidly
reciprocating, high pressure / high temperature gas
seals. Industrial ring wear or ring failure on
expensive capital machinery can be crippling,
particularly when down-time and lost production are
added up. Solve your problems - contact the ring
specialists: EMI
RING TYPES Some common shape of piston rings
used in various applications are as follows:
Plain Section The most fundamental type of
compression ring used for all forms of
compressors, pumps and other applications.
Taper Faced Shortens running-in period and
increases oil scraping ability of the ring.
Internal Chamfer / Internal Step When
installed the ring twists itself, thus improving
its oil control qualities.
Barrel Faced (Symmetric) The natural
working profile of a piston ring is a barrel face.
By pre-profilling, the rings running-in period
will be reduced and oil film forming
characteristics optimised.
Nasen Rings The Nasen Ring can take one of
serveral forms - Plain Faced or taper faced,
square face or undercut depending on the
attributes of application.
SOC Slotted oil control rings remain the
standard type of oil rings for many industrial
application
SOC2k For increased oil scraping
performance these type of rings offer increased
wall pressure at the contact lands.
RING JOINTS Although critical, the ring's
cross sections are only one element in the overall
design consideration; joint configuration is another
mportant factor as it helps to control the way in
which the ring behaves.
Butt
Joint Standard type joint
Bevel
Joint May be left handed or right handed 45
Degree or 60 Degree
Lap
Joint Improved sealing ability
Radial
Box Lap Also known as a gas tight joint
So ring
geometry is a crucial part of determining the ring's
functional characteristics and combined with EMI's
knowledge of piston rings with correct material
specification have created a wide range of piston
rings for every engine.
The
need to creativity and performance knows no diversion or ends. G.S
Sahni (Chairman EMI Group)
