Abstract: A coupling of two confronting hubs with a metal seal ring sealing between the confronting faces of the hubs and O-rings sealing between each hub and the metal seal ring together with a third environmental seal O-ring that seals against pressure in both directions to protect against environmental fluid reaching the metal ring and to provide a final seal in the event of failure of the metal seal ring and one of the O-rings in the groove receiving the metal seal ring.

Abstract: The invention comprises a packer design for use in high temperature well bores. The packer is set by pressuring the well fluid through a tubing string, which moves a piston and shoe assembly on the packer mandrel, compressing a non-elastomeric high temperature packer element. The piston and shoe assembly combination is maintained in position after pressure is decreased, and the packer element is maintained in a compressed state by belleville springs which compensate for the lack of resiliency of the non-elastomeric packer element.

Abstract: A shaft seal has a pair of stationary, yet floating, seals which are biased into engagement with opposite sides of a mating ring carried on a rotating drive sleeve. The mating ring is maintained perpendicular to the axis of rotation and against a squaring surface of the drive sleeve. The location of a secondary seal pressure balances internal machine pressure at the primary seal at a ratio of 80:20, and provides a reverse pressure balance of greater than 100%.

Abstract: A labyrinth seal is disclosed having mutually facing stationary and rotatable members. The rotatable member is comprised of one section adapted to be mounted to a granulator rotor and another section that has a plurality of arcuate segments adapted to be passed over the rotor blade support and removably mounted to the one section.

Abstract: A package for sterilization providing for sterilization by gas and also by steam which comprises a base plate formed of a laminate of a paper layer and a plastics layer mainly consisting of butyral resin; and a plastics covering sheet whose edge is heat-sealed to said base plate around a packaged article.

Abstract: There is disclosed an improved gaseous discharge display panel device and process of manufacturing same. A large number of cathode substrate electrode and mask structures are printed and fired on a single glass sheet, the electrodes being printed first and dried/cured at a higher temperature than subsequently applied mask and electrical crossovers, which are cured at lower temperatures. Upon completion of fabrication of the electrode and dielectric mask structures and crossover connections, the glass plate is simply scored and separated to provide individual back substrate and electrode mask structures which are then assembled with a like formed annode plate structure. Individual devices are then assembled with use of a seal rod preformed to have a gap in the seal structure and a laser facturable mercury dispensing giver.