What I did instead is to paint the doors on the hall side in the same color (but higher sheen) as the walls on that side, and on the inside of the rooms that the doors were attached to I painted the doors the color of the trim in the room.
tabular alumina applications tabular alumina is the material of choice in unshaped and shaped high performance refractories used in a variety of industries steel foundry cement glass petrochemical ceramic and waste incineration other common non refractory applications include its use in kiln furniture and for metal filtration
Graphite and molybdenum disulfide (MoS 2) are the predominant materials used as solid lubricant. In the form of dry powder these materials are effective lubricant additives due to their lamellar structure.The lamellas orient parallel to the surface in the direction of motion.elf lubricating composites: Solid lubricants as PTFE, graphite, MoS 2 and some other anti friction and anti wear additives are often compounded in polymers and all kind of sintered materials. MoS 2 for example is compounded in materials for sleeve bearings, elastomere O-rings, carbon brushes etc.