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 5985-00-606-3113
NSN 5999-01-125-2554
NSN 5855-01-085-5354
NSN 5996-01-455-2198
NSN 6130-00-418-4973
NSN 7035-01-615-8055
NSN 7035-01-169-6551
NSN 2925-01-014-0118
NSN 5905-01-088-6818
NSN 6620-01-467-6795
NSN 5996-00-840-5246
NSN 6620-00-321-3630