Custom Seal Kit

The seal kit manufacturer Sanping custom seal kits is one of the best
partners in the construction machinery maintenance market. We use 1:1 real
mechanical equipment for effective experimental detection, to ensure that
each seal repair kit can effectively adapt to the work requirements of each
hydraulic system and sealing system, and can provide customized services
according to different equipment requirements, and effectively provide
scientific and correct solutions for customers.

How to Install a Seal Kit in a Hydraulic Cylinder?
Different seals have different installation methods, common types:
reciprocating motion seals and skeleton oil seals for rotation. The
installation method of the skeleton oil seal for rotation: the first step,
when taking the oil seal out of the warehouse, check whether there are dust
and sand and other impurities on the surface of the oil seal and the lip, so
as to avoid these substances from damaging the lip and shaft during the
shaft movement, causing leakage.

In the second step, for oil seals with more than two lips like TC, TA, TB,
and TF, please fill the lip with grease, and for single-lip oil seals like
SC, VC, and VB Apply grease to the end. The third step is to confirm that
there is no foreign matter such as anti-rust oil or dust attached to the
surface of the shaft and cavity. If there is any, please clean it.

The fourth step is to confirm that there are no burrs on the surface of the
shaft cavity and chamfers, so as to prevent these burrs from damaging the
lip during installation.

The fifth step is to assemble it into the cavity. It should be noted that
the installation direction of the oil seal is that the sealing lip faces the
sealing introduction side. The sixth step, when installing the oil seal,
please use a special clamp to avoid the oil seal from tilting during
installation. Installation method of hydraulic cylinder seals:

1. Receive a fixed number of oil seals.

2. From oil seal collection to assembly, it must be kept clean.

3. Before assembly, check the oil seal and measure whether the size of each
part of the oil seal is consistent with the size of the shaft and cavity.
Before installing the oil seal, first compare the size of the shaft diameter
with the inner diameter of the oil seal, and they must be consistent. The
inner size of the cavity should be suitable for the width of the outer
diameter of the oil seal. Check whether the lip of the oil seal is damaged
or deformed and whether the spring falls off or rusts. Prevent the oil seal
from being placed flat during transportation, and being affected by external
force extrusion and impact, which will damage its roundness.

4. Do a good job of machining inspection procedures before assembly. Measure
whether the dimensions of the cavity and the shaft are correct. Especially
inside chamfers. There must be no slope. The end face of the shaft and the
cavity should be smooth and clean, the chamfer should be free of damage and
burrs, and the assembly parts should be cleaned. There should be no burrs,
sand, iron filings and other sundries at the shaft loading (chamfer) part,
which will cause oil seal lip For irregular damage, it is recommended to use
r-angle at the chamfering part.

5. In terms of operating skills, you can feel it with your hands to see if
it is smooth and round.

6. Do not tear off the wrapping paper too early before the oil seal is
installed to prevent debris from adhering to the surface of the oil seal and
being brought into the work.

7. Before installation, an appropriate amount of lithium-based ester with
molybdenum disulfide should be applied between the lips of the oil seal to
prevent dry grinding of the lips and affect the interference of the lips
when the shaft starts up instantaneously. ASAP, assemble. If the oil seal
seat installed with the oil seal is not installed immediately, it is
recommended to cover it with a cloth to prevent foreign matter from adhering
to the oil seal. Hands or tools applied with lithium-based grease must be
clean.

8. The oil seal should be installed flat, and there should be no tilting
phenomenon. It is recommended to use hydraulic equipment or socket tools for
installation. The pressure should not be too great, and the speed should be
even and slow.

9. For the machine with the oil seal installed this time, mark it for easy
tracking, and pay attention to the whole process. When the transition is
installed on the stepped shaft, it is necessary to use a copper sheet to
guide the transition or use a plastic tape to protect the transition, so as
not to damage the oil seal.

How to Select the Right o ring seal kit Size?
When we choose seals, we must consider the following important factors:

1. Working pressure
The pressure level and the length of the pressure cycle change have a great
influence on the damage of the seal (such as extrusion). The higher the
pressure, the greater the impact of other factors on the performance of the
seal, such as temperature, speed, material of the seal, the gap between the
piston and the cylinder, and the gap between the piston and the cylinder
head.

2. Working temperature
It is difficult to describe the maximum service temperature and the minimum
service temperature of a sealing material because this is the result of a
series of factors. For the working temperature of the piston and the piston
rod are different, they should be selected differently.

3. Friction
The friction between the seal and the sealing surface depends on many
factors: surface roughness, surface characteristics, pressure, medium,
temperature, seal material, seal type and movement speed.

4. Surface treatment
Experience has shown that the characteristics of the surface of the cylinder
piston and piston rod have a great influence on the life of the seal.
Surface properties are often defined by the value of surface roughness Ra,
which is the arithmetic mean of the absolute value of the surface shape away
from the center line. However, these values cannot fully represent the
influence of the surface condition on the seal, because even under the same
roughness, different surface shape features can cause different degrees of
seal wear on the seal.

Minimum Order: 1 pieces

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