A121004-6
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36006173-A121004-6
Circular MIL Spec Tools, Hardware & Accessories 18 CAB 18 CAP PLUG CHAIN
IP (or "Ingress Protection") ratings are defined in international standard EN 6529 (British BS EN 6529:1992, European IEC 659:1989). They are?used to define levels of sealing effectiveness of electrical enclosures against intrusion from foreign bodies?(tools, dirt etc) and moisture.