Look up obturation in Wiktionary, the free dictionary. Obturation is the necessary barrel blockage or fit in a firearm or airgun created by a deformed...

War I. The major problem to be solved with breechloading artillery was obturation: the sealing of the breech after firing to ensure that none of the gases...

relatively thin, tough and deformable seal known as a driving band or obturation ring needed to trap propellant gases behind a projectile, and also keep...

Mineral trioxide aggregate (MTA) is an alkaline, cementitious dental repair material. MTA is used for creating apical plugs during apexification, repairing...

decontamination of the hollows with small files and irrigating solutions, and the obturation (filling) of the decontaminated canals. Filling of the cleaned and decontaminated...

disinfection to a satisfactory length but also provides a shape conducive to obturation (filling of the canal). Hand files can provide tactile sensation when...

The palatal obturation may be managed temporarily or may be sustained for longer periods of time. Location-specific palatal obturation has been documented...

of a rifled long gun, yet maintain good accuracy during firing due to obturation by expansion of the bullet's base when fired. The Minié ball is a cylindro-conoidal...

century. However, although it was the first cartridge to use a form of obturation, a feature integral to a successful breech-loading cartridge, Pauly died...

which would lead to the barrel shattering when the weapon was fired. The obturation, a big problem in earlier Krupp rifled breech loaders, was ensured by...

ammunition use sliding-block or sliding-wedge breeches and the case provides obturation which seals the breech of the gun and prevents propellant gasses from...

the original propellant charge bypassed the projectile due to faulty obturation and prematurely ignited the subsidiary charges before the shell passed...

An obturating ring is a ring of relatively soft material designed to obturate under pressure to form a seal. Obturating rings are often found in artillery...

after, Vickers acquired the British patents. Welin breech blocks provide obturation for artillery pieces which use separate loading bagged charges and projectiles...

leaking out of the breech; this is called obturation. With bagged charges, the breech itself provides obturation and holds the primer. In either case, the...

Marlin, Jay; Krakow, Alvin Arlen; Gron, Poul (1977). "Three-dimensional obturation of the root canal using injection-molded, thermoplasticized dental gutta-percha"...

vessels, is usually viewed as a pathological immune response, leading to obturation of lumen of blood vessel and subsequent hypoxic tissue damage, in some...

expanding radially against the gun barrel wall. This created a seal (obturation), which prevented the hot propellant gases (expanding behind the lead...

pieces or be one part. The powder wad acts as the gas seal (known as obturation), and is placed firmly over the powder; it may be a paper or plastic part...

interest introduced in 1866 on the Chassepot rifle was the method of obturation of the bolt by a segmented rubber ring which expanded under gas pressure...

reduce the spin rate when using a rifled barrel, a "slip obturator" (slip obturation ring) is incorporated that allows the high pressure propellant gasses...

era, and often used paper or linen cartridge cases, which provided no obturation, or sealing of the breech against the expanding gases (such as the Sharps...

fires separate ammunition using metal cartridge cases that also provide obturation. The ammunition is interchangeable with that used with other 152 mm guns...

which relied upon the power of the gun's firing to effect the gas seal ("obturation") rather than the manual labour in the 1858 design. It was a major supplier...

aerodynamic teardrop body with flat stabilizers (called vanes or fins) and an obturation groove around its widest part, both features which will define the design...

fires separate ammunition using a metal cartridge case that also provides obturation. The ammunition is different to that used with 122 mm howitzers. There...

FH70 features included: a vertical sliding-block breech that provided obturation and held a primer magazine containing 12 primers (a similar breech was...

perforations, repair of resorption perforations, root canal sealing and obturation. MTA sets into a hard filling material when mixed with water. Some resin-based...

effects. Upon firing, the cartridge case expands and seals the chamber (obturation). When the peak pressure starts to drop the cartridge case contracts and...

probably on account of the known difficulty of ensuring trustworthy obturation by any other means practicable with sliding wedge guns. The charges for...