seal

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seal

(1) An embossed impression created by a metal die pressed upon paper.A notary public seal, a corporate seal,or a government agency seal are all proof that the signature of that person is genuine and authorized,because they would not otherwise have access to the embosser to create the seal.(2) Originally,an impression made in wax upon a contract.It took the place of reciting consideration, having a signature, or having witnesses for the contract. Today, some statutes allow certain symbols,such as the initials “l.s.”to take the place of a seal,transforming a standard contract into one “under seal.”Where still recognized, contracts under seal may have a longer statute of limitations than others.

References in periodicals archive ?
The basic form of the Seventomatic is based on Freudenberg Sealing Technologies' tried-and-tested seals for tunnel boring machines.
The 3rd generation of the wheel bearing was taken as an example to carry out the sealing analysis.
Since the seal lip of the new radial shaft seal ring from Freudenberg Sealing Technologies lies against the shaft on its own, it is also possible to vary the seal's direction of force at will.
The 72 page guide also includes advice on the storage and handling of elastomeric seals, a glossary of sealing terms, and conversion factors including units of common usage in sealing terminology.
The applied sealing pressure, axial spring force and the friction of the balance diameter-sealing element determines the contact pressure.
These non-vented bellows seal from two sides, aiding in dual sealing and preventing in the accumulation of contaminants inside the leaflet.
For example, several design variations can be used to combat the problems, such as reducing the radial load of the lip seal, changing to a sealing material that is designed to withstand higher temperatures, using an alternative lubricant type or viscosity, optimising the shaft sealing surface or opting for a non-contacting labyrinth seal design.
In experiments, trays made of crystallized polyethylene terepthalate were sealed using flat, curved or reduced-profile sealing heads.
JOHN CRANE, the world's leading supplier of engineered sealing systems and associated products has announced the introduction of the Type 2874NE: a new highly reliable gas lubricated API 682 (ISO 21049) qualified High Temperature non-contacting mechanical seal that utilises internally pressurised outward pumping spiral groove face technology with high-temperature seal features such as Inconel welded metal bellows and non-elastomeric carbon graphite secondary seals.
Labyrinths, stuffing boxes, lip seals, bushings, spiral-groove seals, and mechanical seals made out of a very large number of materials, are the systems that are commonly used for sealing rotating shafts.
"Usually, this provides a lower friction rate and in many cases you can use the internal pressure of the fluid you are sealing to seal at higher pressures, while the spring keeps the PTFE loaded against the rod at low pressures.