AS-C278 Customized Double Cartridge Mechanical Seal

This seal is customized double cartridge seal suitable in various occasions

Background Knowledge：
Points to note when O-rings are used for rotary seals
O rings cannot only be used in mechanical seals，but also in rotary  seals.
When the O-ring is used for rotary sealing, the linear speed should not be too high, generally 0.3~0.5m/s is appropriate, otherwise oil will leak. Because when the o-ring is used for rotary sealing, frictional heat is generated at the contact point, the temperature continues to rise, and the oil-cut phenomenon at the contact point causes wear and aging. And the rubber in the stretched state will shrink when it is heated (Joule effect), which greatly aggravates the aging, cracking and wear of the rubber, resulting in seal failure, and the amount of leakage is related to the rotation speed.For this reason, the inner diameter of the O-ring is generally designed to be equal to or slightly larger (3~5%) than the diameter of the shaft. When installing, the O-ring is compressed from the outside to the inside, and the compression of the section is also designed to be smaller (about 5%). In addition, it is best to use heat-resistant materials and consider the heat dissipation and lubrication of the O-rings. In addition, the O-ring can be installed obliquely. After adopting these measures, the pu value (seal pressure 6 linear velocity) can be reached as 5.6MPa*7.65m/s=42.84MPa.m/s.