Our company produces CN-YJJTI prefabricated silicone rubber
insulated straight through joint and CN-YJJJI prefabricated
silicone rubber insulating joint, applied to connect two identical
or similar cross sections of the cable.
They are composed of prefabricated insulating main body (including
stress cone), metal protective sheath and fiberglass outer
The prefabricated silicone rubber main body adopts imported liquid
silicone rubber injecting forming which has long-term stability of
lasting hold force and electric field uniform ability.
Metal protective sheath is composed with two different lengths of
metal tail tube and tubular insulating ring, filled with insulating
sealant, and covered with insulating and sealing.
The outer protective sheath of glass fiber reinforced plastics is
in the outermost layer, filled with waterproof sealant which
protects the mechanical properties, anti-erosion and sealing of
middle joints, ensuring the safety of long run.
Our product is using multiple sealing structures which can
effectively prevent the leakage of water immersion. All of the
seals are using imported NBR or silicon rubber material. All of the
fasteners are stainless steel with good waterproof seal
For different work environments and users’ specified requirements,
metal protective sheath and fiberglass outer sheath are optional.
In environments without water damage, mechanical damage or
corrosion, there is no need to use outer metal protective sheath or
fiberglass sheath, which is better for heat emission of the product
to ensure long service life.
In environments with depth of water immersion of 0.5 meter, erosive
materials and great possibilities of mechanical damage, please
choose the metal protective sheath and fiberglass sheath, which is
better for protect products. For the above two environments, one
option can be chosen to ensure the stable and safe operation of
middle joints in service life.
The cross sectional areas range of cables with supporting
accessories of various voltages is as following:
Compact structure: silicone rubber parts is using entirely
prefabricated rubber insulator with small size compact structure,
straight through and insulating joints share the same prefabricated
Easy installation: using advanced site dual installation, one
machine to expand, another shrink in connection cable, greatly
improving installation efficiency and reducing the labor.