Seal cartridge, seal cartridge assembly, and method of use

A seal cartridge assembly of a sealing system, the seal cartridge assembly comprising:

• a seal cartridge having:
• a first side surface;
• a second side surface, opposite to the first side surface;
• a circumferential inner surface extending from the first side surface to the second side surface, the circumferential inner surface having a first seal-receiving portion, adjacent to the first side surface, a second seal-receiving portion, adjacent to the second side surface, and a protrusion portion between the first seal-receiving portion and the second seal-receiving portion;
• and
• at least one grease passage having one opening on the first side surface and another opening on the protrusion portion of the circumferential inner surface;
• a first seal provided within the first seal-receiving portion of the circumferential inner surface;
• and
• a second seal provided within the second seal-receiving portion the circumferential inner surface.

A method of using a seal cartridge assembly for a cylindrical shaft, the seal cartridge assembly including a seal cartridge having:

• a first side surface, a second side surface, opposite to the first side surface, a circumferential inner surface extending from the first side surface to the second side surface, the circumferential inner surface having a first seal-receiving portion, adjacent to the first side surface, a second seal-receiving portion, adjacent to the second side surface, and a protrusion portion between the first seal-receiving portion and the second seal-receiving portion, and at least one grease passage having one opening on the first side surface and another opening on the protrusion portion of the circumferential inner surface, the seal cartridge assembly further including a first seal provided within the first seal-receiving portion of the circumferential inner surface, and a second seal provided within the second seal-receiving portion of the circumferential inner surface, the method comprising:
• placing the seal cartridge, the first seal, and the second seal onto the cylindrical shaft, thereby sealing a first side of the cylindrical shaft and a second side of the cylindrical shaft and forming a greasing area between the circumferential inner surface of the seal cartridge, the first seal, the second seal, and the cylindrical shaft;
• and
• supplying grease to the greasing area via the at least one grease passage, the supplying the grease including expelling contents of the greasing area towards and around the first seal, toward the first side of the cylindrical shaft, and thereby replacing the contents of the greasing area with the supplied grease.