Cuarzo fundido
General Fused Silica GlassDisulfuro de tungsteno
Tribotecc® WS 2 Tungsten Disulfide (98.5% purity)Suministrada por:
Tribotecc GmbHBorosilicato
General Borosilicate GlassBorosilicato
General High Borate Borosilicate GlassSilicato sodocálcico
General Soda-Lime GlassVidrio
General Flint Glass