Item must comply with requirements of defense supply center philadelphia production standard no. Po0004nrp
A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5998-00-940-9744
NSN 5935-01-320-8651
NSN 6650-00-266-6808
NSN 5999-01-205-2868
NSN 5935-01-055-7602
NSN 5905-01-592-2456
NSN 5960-00-983-7232
NSN 5925-00-869-6385
NSN 6145-01-160-0811
NSN 5920-00-930-2307
NSN 6150-00-561-0403
NSN 6130-00-211-2890