Specification: Proof Load: Identification: Common Use: Comment: Commercial 2,500 lb 444, RW-8 3-ring harness ring Sport harnesses Specification: Proof Load: Identification: Common Use: Comment: Commercial 2,500 lb 2058 Tandem drogue release N/A Specification: Proof Load: Identification: Common Use: Comment: Commercial 2,500 lb 555, RI-1 Sport student harness, pilot  emergency harness N/A  Specification: Proof Load: Identification: Common Use: Comment: Commercial Work Load: 3850;  Breaking Strength: 7700 5010-SS Articulated harness (Hip) ring N/A Figure 3-79.  Ring, harness, mini. Figure 3-77.  Ring, harness, “O” 2058 Cadmium Ring.  Figure 3-80.  Ring, quick fit. Figure 3-78.  Ring, harness, 5010-SS Ring. Housings are spiral-wound flexible tubing. Almost all are  stainless steel. Their design is to route, house, and protect  the ripcord cable. They are anchored to the container at one  end and the ripcord pocket or mount at the other end. Most  ripcord housings are compressible only, but some military  Of all these, Velcro $^{®}$ and grommets play a major part in  parachute manufacture. The use of  Velcro$^{®}$ is primarily for  protector flap closure designs, while grommets are for use in  pack closing systems. Both fasteners are subject to extreme  wear and tear in their normal use. Consequently, routine  maintenance involves the repair and replacement of these  items.  [Figures 3-85  through  3-89] Housings 3-22