Quad
rings are specially developed sealing solutions that are four lipped,
with twice the number of sealing surfaces as an O ring. The four
lobed design not only provides lower friction than an O ring, but
also, due to its square cross section, it resists spiral twist. These
rings are available in a wide range of elastomer materials for both
standard and also other special applications.This type of rings are
vulcanized as a continuous ring. A quad ring completely
interchangeable with O rings and are available in all standard O Ring
sizes from 1/32 inches to 26 inches, as well as custom seals for
unique applications. There
are many features of quad rings, which include high sealing effect,
avoiding spiral twist, longer seal life, absence of parting line on
sealing surface and many more.
The
introduction of high eneregy systems, increased operating pressures
and a host of special purpose fluids has eliminated the casual
selection of sealing devices for most applications. Less
friction is achieved as a result of two sealing surfaces giving a
positive seal. Due to an improved pressure profile over quad ring
cross section, a high sealing effect is achieved. To minimize
breakaway friction, an O Ring groove must be wide enough to allow
rolling or twisting of the seal. In the long stroke of a
reciprocating seal application, this twisting action can strain and
eventually tear the rubber, causing a failure mode known as spiral
twist. To prevent spiral twist, the quad ring's four lobed
configuration is designed to withstand the distortion and extrusion
often caused by high or pulsating pressure. To accommodate these
forces, a quad ring uses a narrower groove than a comparable O Ring
or a seal.
Because
less squeeze means less friction with the four lobed design, seals
last longer. This means equipment in which the quad ring is installed
will operate longer and require less maintenance. Unlike O Rings,
where partitioning lines are on the sealing surface, quad ring’s
parting lines lie between the lobes, away from the sealing surface.
This design eliminates the problems of leakage resulting from a
parting line’s irregular surface. The recessed mold parting line
provides no flash or parting line on the surface of the seal and
ensures no leakage. A single quad ring can play an important role in
two directions' seal and is applicable for different seal media such
as oil, water, gas, chemical medium and other mixed media. The
uniqueness of these rings from the house of Darcoid Nor-Cal Seals
makes the product reliable and sustainable.
What's
more, a lubricant reservoir formed between the sealing lips improves
performance at start up. Their four lobe configuration also helps to
eliminate the seal from twisting in the groove causing premature
failure. A quad ring can be used in a wide variety of static and
dynamic sealing applications. With the unique four lobe
configuration, quad rings have two sealing areas per side as opposed
to one sealing area on an O ring. Quad rings are available
exclusively from the house of Darcoid Nor-Cal Seal. Darcoid
Nor-Cal Seal is the company that is into the supply of various
sealing solutions for usage in applications in many industries
including automotive, aerospace, semiconductor, medical,
instrumentation and process control industries, they offer an
inexpensive solution to design problems.
Darcoid's
vast experience in managing seal supply chains uniquely qualifies the
company as the choice for all your sealing needs. Our value added
programs are designed to integrate into your processes based on your
company goals and supplier’s requirements. Darcoid Nor-Cal Seal is
the world’s leading diversified manufacturer of motion and control
technologies and systems, providing precision-engineered solutions
for a wide variety of commercial, mobile, industrial and aerospace
markets.
