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Thermo Vacuum Generators has extended the routine replacement of seals from every 500 000 cycles to every 700 000 cycles. The seals are required to maintain vacuum integrity and prevent the release of hazardous chemicals. The company was looking for a rotary seal for a gate valve actuator commonly e
## Seal ring Applicans: NOK Corporation, Japan This patent describes a design of butt joint for pistons rings which from the description are used as shaft seals. The rings have a stepped butt joint and one half of the joint has a surface that slopes in the circumferential direction and is engaged
This patent is concerned with the duo-cone type of mechanical face seal that is used in earthmoving equipment applications. Elastic layers (28, 29) are used on the conical surfaces of the seal rings and housing respectively. The purpose is to inhibit entrainment of debris.
"**BEST OF 2019"** --**SUSPENSE MAGAZINE ** **** **When a hang-gliding stranger is found fatally injured in the cliffs above Monterey Bay, the investigation into his death becomes a cluttered mess. Professional organizer Maggie McDonald must sort the clues to catch a coastal killer before her fa