CARBON GRAPHITE PACKING RINGS

Brand	Owner	Address	Description
NATIONAL	MORGAN CRUCIBLE COMPANY PLC, THE	Morgan House Madeira Walk Windsor, Berkshire SL4 1EP	CARBON AND GRAPHITE PACKING RINGS AND CARBON AND GRAPHITE SEAL RINGS FOR USE IN: NON-LUBRICATED STUFFING BOXES, STEAM TURBINE AND TURBO-BLOWER GLANDS, NON-LUBRICATED AIR AND GAS COMPRESSORS, PAPER MACHINE DRYER ROLLS, AND WATER PUMPS, AND FOR USE IN REFRIGERANT GAS SEALS;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

Method of improving humidity resistance in a coated article (19) comprising a carbon-carbon composite component (10), a graphite component (10), or a ceramic matrix composite component based on carbon fibers and/or graphite (10). The component (10) is preferably configured as an aircraft landing system brake disc. The method includes the steps of: (A) providing a carbon-carbon composite component (10), a graphite component (10), or a ceramic matrix composite component based on carbon fibers and/or graphite (10); (B) covering the component (10) with a phosphorus-containing antioxidant undercoating (11) having a thickness of approximately 1-10 mil; and (C) covering the resulting undercoated component (10, 11) with a boron-containing glass overcoating (12) having a thickness of approximately 1-10 mil. The overcoating includes 20-50 wt-% alkali or alkaline earth metal silicates, 3-25 wt-% alkali metal hydroxide, up to 10 wt-% boron nitride, and one or both of 5-40 wt-% elemental boron and 5-40 wt-% boron carbide. The overcoating is substantially free of phosphoric acid and phosphates. Also, articles coated with the specified undercoating/overcoating combinations.