seal weld

seal weld

[′sēl ‚weld]
(metallurgy)
A weld designed primarily for preventing leakage.

seal weld

A weld used primarily to provide a specific degree of tightness against leakage.
References in periodicals archive ?
Assembly When equipped with Must be field welded, bayonet assemblies, set x-rayed, leak tested, at elevation, mate the cleaned, finish painted bayonet assemblies and and insulated at seal weld one joint.
The Echotel 915P is available with stainless steel (316/316L), Hastelloy C or Monel sensors with threaded or seal welded flanges conforming to PED.
The engine itself, however, was also cited as having numerous instances of metal fatigue and inoperable safety procedures - such as fusible plugs which had been seal welded and, therefore, unable to blow to release pressure.
All equipment is secured to a heavy-duty steel skid base that has been seal welded, sandblasted and coated with an Ameron paint system.
Seal welds can be controlled to within [plus or minus]1[degrees]C and be set to seal film thicknesses up to 150 microns.
The annulus is filled with epoxy and the plugs must be seal welded to maintain the pressure containment of the completed assembly.