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 5895-00-132-4207
NSN 5999-01-356-0274
NSN 6220-01-528-8811
NSN 6150-01-222-1698
NSN 5990-00-116-6590
NSN 6650-01-513-2644
NSN 6610-01-075-0673
NSN 5920-01-529-7697
NSN 5950-01-216-7196
NSN 5910-00-552-1983
NSN 6145-01-321-4404
NSN 6650-00-410-3582