Abstract: A seal ring for a radial separation seal includes a first ring segment comprising a male portion and a second ring segment comprising a female portion. The female portion is configured to engage the male portion in the manner of a tongue and groove joint. The joint includes an inner interface at which the first ring segment abuts the second ring segment, the inner interface comprising two inner sealing surfaces; and outer interface at which the first ring segment abuts the second ring segment the outer interface comprising two outer sealing surfaces. The outer interface is radially outward from the inner interface so that when the first ring segment is in an engaged position with the second ring segment so that when a fluid flow provided to the inner interface, fluid pressure from the fluid flow pushes the inner sealing surfaces of the inner interface apart.

Abstract: A seal includes a mating ring that rotates relative to a carbon primary ring at a seal interface. A buffer gas is provided into the seal and passes from the back of the primary ring to the seal interface. The seal can be used as a separation seal or in combination with another seal.

Abstract: An example work machine generally includes a main section, a pair of inner wings, a pair of outer wings, a pair of flippers, a work assembly, a ground interface assembly, and a height control assembly. The flippers are pivotable relative to the outer wings about axes that extend in a direction transverse to the travel direction of the work machine. Each flipper includes at least one corresponding work component and at least one corresponding ground interface mechanism. The height control assembly is operable to adjust heights of the work components relative to a ground surface.

Abstract: A seal includes a mating ring that rotates relative to a porous carbon primary ring at a seal interface. A buffer gas is provided into the seal and passes from the back of the primary ring to the seal interface. The seal can be used as a separation seal or in combination with another seal.

Abstract: A seal includes a mating ring that rotates relative to a carbon primary ring at a seal interface. A buffer gas is provided into the seal and passes from the back of the primary ring to the seal interface. The seal can be used as a separation seal or in combination with another seal.

Abstract: A seal ring for a radial separation seal includes a first ring segment comprising a male portion and a second ring segment comprising a female portion. The female portion is configured to engage the male portion in the manner of a tongue and groove joint. The joint includes an inner interface at which the first ring segment abuts the second ring segment, the inner interface comprising two inner sealing surfaces; and outer interface at which the first ring segment abuts the second ring segment the outer interface comprising two outer sealing surfaces. The outer interface is radially outward from the inner interface so that when the first ring segment is in an engaged position with the second ring segment so that when a fluid flow provided to the inner interface, fluid pressure from the fluid flow pushes the inner sealing surfaces of the inner interface apart.

Abstract: A seal includes a mating ring that rotates relative to a porous carbon primary ring at a seal interface. A buffer gas is provided into the seal and passes from the back of the primary ring to the seal interface. The seal can be used as a separation seal or in combination with another seal.