Specification: Tear/breaking Strength: Identification: Common Use: Comment: PIA-C-7219 class 3, 7.25 oz, 420  denier 20 lb/275-325 lb 1-1 plain weave Sport and military containers Has a urethane coating on the  inside Specification: Tear/breaking Strength: Identification: Common Use: Comment: PIA-C-26643 3 lb/25-35 lb N/A Military pilot chutes Ph: 6-8 Specification: Strength: Identification: Common Use: Comment: Commercial, No. 94040 N/A N/A Sport pilot chutes, some round  reserves Ph: 6-8, 96" wide Specification: Strength: Identification: Common Use: Comment: MIL-C-43734, class 3 1,000 denier N/A Sport and military container  systems Has a urethane coating on the  inside Figure 3-7.  Cloth, duck, nylon (Para-pak). Figure 3-5.  Cloth, netting, nylon (marquisette).  Figure 3-8.  Cloth, nylon, Cordura$^{®}$.  Figure 3-6.  Cloth, mesh, large hole, nylon.  Webbing Selection The reason for this limitation is because of the reaction of the  webbing when “edge nicked” while under tension. In tests  of the most advanced needle weave products several years  ago, it was dramatically demonstrated, numerous times, that  the webbing would fail catastrophically when the edge was  nicked with sharp metal while under tension. When a repair requires replacement of webbing and tapes,  care must be taken to use the correct webbing or tape for  the job. Generally, there are two types of webbings used  in industry: needle weave and  shuttle weave. Remember  this: “Needle Never, Shuttle Sure.” This is because  needle weave webbing is rarely, if ever, used in personnel parachute assemblies. 3-4