About Constrc
For 43 years, one rule remains unbroken: We only produce high quality oil seals.
Every day, we test materials, measure tolerances, verify pressure limits, and refine processes—
so your equipment runs longer, and you sleep better.
Oct 28, 2019
Product catalog query table
Agricultural machinery oil seal Bucket shaft seal High pressure oil seal ...
Agricultural machinery oil seal Bucket shaft seal High pressure oil seal ...
Jul 26, 2018
Skeleton oil seal
The skeleton oil seal is a typical representative of the oil seal. Generally speaking, the oil seal refers to the skeleton oil seal. The function of the oil seal is generally to isolate the parts of the transmission component that need to be lubricated from th ...
The skeleton oil seal is a typical representative of the oil seal. Generally speaking, the oil seal refers to the skeleton oil seal. The function of the oil seal is generally to isolate the parts of the transmission component that need to be lubricated from th ...
Jul 18, 2018
O-ring history
The first patent for the O-ring, is dated May 12, 1896 as a Swedish patent. J. O. Lundberg, the inventor of the O-ring, received the patent.The US patent for the O-ring was filed in 1937 by a then 72-year-old Danish-born machinist, Niels Christensen. Soon afte ...
The first patent for the O-ring, is dated May 12, 1896 as a Swedish patent. J. O. Lundberg, the inventor of the O-ring, received the patent.The US patent for the O-ring was filed in 1937 by a then 72-year-old Danish-born machinist, Niels Christensen. Soon afte ...
Jul 6, 2018
We Olny Produce High Quality Oil Seal
DMHUI-Environmental cassette oil seal Cassette oil seal is composed of two or more components to form a closed chamber, a plurality of auxiliary sealing lips inside the c ...
DMHUI-Environmental cassette oil seal Cassette oil seal is composed of two or more components to form a closed chamber, a plurality of auxiliary sealing lips inside the c ...
Jul 2, 2018
We Only Produce High Quality Oil Seal
JULU COUNTY NEMEIRUI MECHANICAL SEAL FACTORY Julu County Demeirui Mechanical Seal Factory, established in 1999, is a high-tech enterprise specializing in more clean and environment high-end sealing products. Our factory includes: R&D department, Sealin ...
JULU COUNTY NEMEIRUI MECHANICAL SEAL FACTORY Julu County Demeirui Mechanical Seal Factory, established in 1999, is a high-tech enterprise specializing in more clean and environment high-end sealing products. Our factory includes: R&D department, Sealin ...
Jun 26, 2018
DMHUI 2018 Latest Cassette oil seal catalog
Condition of Application for cassette oil seals Material: NBR Black HNBR Black (low temperature resistance) FKM Brown (high temperature resistance) Temperature: NBR max 80°C HNBR max 90°C FKM max 100°C Pressure: 0.5bar max Linear speed: NBR maxi ...
Condition of Application for cassette oil seals Material: NBR Black HNBR Black (low temperature resistance) FKM Brown (high temperature resistance) Temperature: NBR max 80°C HNBR max 90°C FKM max 100°C Pressure: 0.5bar max Linear speed: NBR maxi ...
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