Safety Wire
Moroso Safety Wire is widely used to secure all kinds of fasteners and controls from nuts and bolts to check valves, switches and modulators where a loose or lost component might mean disaster
Made of .032" diameter 304 stainless steel; comes in one-pound cans
Caution: Safety wire should not be reused

Mr Gasket Vacuum Cap Assortment Kit Kit Includes 4 pcs-1/8", 4 pcs-3/16", 4 pcs-1/4", 2 pcs-5/16", 2 pcs-3/8".
Use to block off open engine vacuum fittings. Sixteen pieces of quality "Buna-N" rubber makes for a much more durable, long-lasting part as compared to neoprene or vinyl materials...especially when exposed to high under-hood temperatures.