Metal ring seals are static devices that can withstand high temperatures, pressures, and vacuums. They can also withstand cryogenic conditions and high face-to-face cycling. Metal ring seals are ...

The molten material rapidly cools to create a seal. Metal-to-metal hermetic seals are created by firing two or more metal components with the addition of gold, silver, nickel or copper filler ...

The Butley seal (left) was used to leave the priory's mark of the Virgin and child (right) on documents A 10-year-old metal detectorist has found a rare monastic seal while searching a field.