Abstract: A water jet nozzle for a loom includes a nozzle member having a rear end portion, an interior orifice formed in the rear end portion, a stabilizer integrally connected to the orifice for adjusting water flow in the rear end portion of the nozzle member and a needle arranged centrally of the orifice for feeding out a weft yarn. The orifice and stabilizer define an annular groove therebetween and are made of a material having a high hardness and high corrosion resistance. The orifice and stabilizer are preferably made of a material such as a cemented carbide, cermet, or ceramic having a modulus of elasticity of at least 1.5.times.10.sup.4 kg/mm, an H.sub.R A hardness of at least 85 and a flexural strength of at least 50 kg/mm.sup.2. The stabilizer is constructed of a plurality of elongated blades of equal width arranged in concentric parallel spaced relation to define therebetween a plurality of elongated slits of equal width arranged in concentric parallel spaced relation.

Abstract: An auxiliary nozzle for a loom, such as an air jet loom within a shuttleless loom, jets pressurized gas in order to prevent stall of weft inserted into warp shedding. At least a tip portion of an auxiliary nozzle body is formed of ceramics material having a very small integrally-molded surface roughness of 0.5 .mu.m or less and having characteristics of high toughness and high strength whereby occurrence of flaws in warp can be minimized and woven fabric of high quality can be obtained. Particularly, by employment of particular zirconia-type ceramics, the moldability, processing properties for drilling and wear resistance can be improved.