Sealant injection systems for injecting sealant into a cavity, the sealant injection systems including a sealant dispensing tip having a proximal end portion, a body portion, and a distal end portion that define a continuous channel to an aperture in the distal end portion for dispensing sealant material into a cavity, where the aperture is surrounded by a compressible material. The distal end portion may have a linear ridge defined on an end face, the aperture being asymmetrically provided relative to the ridge.

Sealant injection systems for injecting sealant into a cavity, the sealant injection systems including a sealant dispensing tip having a proximal end portion, a body portion, and a distal end portion that define a continuous channel to an aperture in the distal end portion for dispensing sealant material into a cavity, where the aperture is surrounded by a compressible material. The distal end portion may have a linear ridge defined on an end face, the aperture being asymmetrically provided relative to the ridge.

An applicator tool positionable within a valve seat bore of a cylinder head for an internal combustion engine. The applicator tool includes a sealing portion extending radially outwardly from a base body of the applicator tool for sealing abutment with the valve seat bore, a wiper portion extending radially outwardly from the base body and narrower in diameter than the sealing portion, and a circumferential groove between the sealing portion and the wiper portion and recessed relative to the wiper portion, wherein the circumferential groove has a groove base which is circumferentially continuous.

Sealant injection systems for injecting sealant into a cavity, the sealant injection systems including a sealant dispensing tip having a proximal end portion, a body portion, and a distal end portion that define a continuous channel to an aperture in the distal end portion for dispensing sealant material into a cavity, where the aperture is surrounded by a compressible material. The distal end portion may have a linear ridge defined on an end face, the aperture being asymmetrically provided relative to the ridge.

Sealant injection systems for injecting sealant into a cavity, the sealant injection systems including a sealant dispensing tip having a proximal end portion, a body portion, and a distal end portion that define a continuous channel to an aperture in the distal end portion for dispensing sealant material into a cavity, where the aperture is surrounded by a compressible material. The distal end portion may have a linear ridge defined on an end face, the aperture being asymmetrically provided relative to the ridge.

An applicator tool for coating a bore includes a tubular body and an inflatable bladder. The tubular body includes a proximal end and a distal end opposing the proximal end along a longitudinal axis. The tubular body also includes an expansion portion proximate the distal end and an internal volume in relation to the expansion portion. The inflatable bladder disposed within the internal volume of the tubular body in relation to the expansion portion. A method for coating a bore includes inserting an expansion portion of an applicator tool into the bore. A coating material having been previously disposed on the expansion portion. The method also includes applying a pressurized fluid to the applicator tool to expand the expansion portion within the bore and rotating the applicator tool to apply the coating material from the expansion portion to the bore. A system that includes the applicator tool is also disclosed.

An applicator tool for coating a bore includes a tubular body and an inflatable bladder. The tubular body includes a proximal end and a distal end opposing the proximal end along a longitudinal axis. The tubular body also includes an expansion portion proximate the distal end and an internal volume in relation to the expansion portion. The inflatable bladder disposed within the internal volume of the tubular body in relation to the expansion portion. A method for coating a bore includes inserting an expansion portion of an applicator tool into the bore. A coating material having been previously disposed on the expansion portion. The method also includes applying a pressurized fluid to the applicator tool to expand the expansion portion within the bore and rotating the applicator tool to apply the coating material from the expansion portion to the bore. A system that includes the applicator tool is also disclosed.

A surface treatment device for applying a surface treatment to an inner surface of a hollow engine shaft extending longitudinally along a shaft axis and having an axial shaft length to be treated. The device includes a supply of a surface treatment agent and an elongated rod extending from a proximal end to a distal end with an applicator disposed at the distal end. The elongated rod is insertable inside the hollow engine shaft. An applicator is disposed at the distal end of the elongated rod and wetted with the surface treatment agent. The applicator is engageable with the inner surface of the hollow engine shaft for applying the surface treatment agent to the inner surface of the hollow engine shaft. A pair of markers are disposed on the elongated rod and axially spaced apart from one another at a first axial distance corresponding to the axial shaft length.

A surface treatment device for applying a surface treatment to an inner surface of a hollow engine shaft extending longitudinally along a shaft axis and having an axial shaft length to be treated. The device includes a supply of a surface treatment agent and an elongated rod extending from a proximal end to a distal end with an applicator disposed at the distal end. The elongated rod is insertable inside the hollow engine shaft. An applicator is disposed at the distal end of the elongated rod and wetted with the surface treatment agent. The applicator is engageable with the inner surface of the hollow engine shaft for applying the surface treatment agent to the inner surface of the hollow engine shaft. A pair of markers are disposed on the elongated rod and axially spaced apart from one another at a first axial distance corresponding to the axial shaft length.

A dauber assembly may comprise a manifold body comprising a first end configured to receive a nozzle, and a collar extending at least partially around the manifold body. The collar may comprise an inlet port. The manifold body may have one or more holes providing fluid communication between the inlet port of the collar and an outlet of a nozzle received by the first end of the manifold body.