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Qaagi - Book of Why

Causes

Effects

high temperature backup ringsto preventseal extrusion

Designingto preventseal extrusion

Unevennesscausesseal extrusion

Braided packing is used in combination with Injectable packingto preventextrusion of the sealant

EPDM elements with wire mesh back upsto preventseal extrusion

A backup washer should generally be used at pressures greater than 1500 PSI ( 103.4 Barto preventseal extrusion

the polyurethane characteristics and the geometry of the seal together with the small degree of shear strain experienced in the seal design(passive) caused byseal extrusion

being formedthereby preventingseal extrusion

However , when gland clearance is too great , a backup ring is providedto preventseal extrusion

the sealing diameterto preventseal extrusion

a adaptedto preventseal extrusion

the need for the backup ringpreventsseal extrusion

the remaining surface of the platepreventsseal extrusion

the powered Lentulo spiralcausedsealer extrusion

mm of the apical tip of the dedicated GP cone is removedto preventsealer extrusion

0.05 mm of the apical tip of the dedicated gutta - percha cone is removedto preventsealer extrusion

Peelable sealants(passive) created byPeelable sealants

a significant change in one or more electrical properties ( for example , resistivity ) of the seal 20would causea significant change in one or more electrical properties ( for example , resistivity ) of the seal 20

in the destruction of the QUAD - RING R Sealcan resultin the destruction of the QUAD - RING R Seal

in the destruction of the QUAD - RING Sealcan resultin the destruction of the QUAD - RING Seal

a lamination(passive) created bya lamination

forth belowsetforth below

leakage accident emergencycausedleakage accident emergency

in 1948discoveredin 1948

to use at low levels ( typically 200 - 1000ppm ) to improve processing of thermoplasticsdesignedto use at low levels ( typically 200 - 1000ppm ) to improve processing of thermoplastics

to be up 17.5 percentsetto be up 17.5 percent

to unwanted irritation of the tissues around the root and should be avoidedleadsto unwanted irritation of the tissues around the root and should be avoided

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