[ Sealing joints being parts of engines; sealing joints being parts of machines; mechanical seals being parts of machines; ] sealings for propeller shafts being parts of machines; sealings for propeller shaft sleeves being parts of machines; propeller shaft bearings being parts of machines; sealings for pump shafts being parts of machines; sealings for pump shaft sleeves being parts of machines; [ pump shaft bearings being parts of machines; marine engines; machine coupling and transmission c...