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 5998-01-634-0604
NSN 5935-00-163-3618
NSN 5998-01-235-1064
NSN 6150-00-625-8031
NSN 5945-01-394-7242
NSN 6135-01-098-3020
NSN 5965-00-223-6354
NSN 6685-00-871-5146
NSN 5925-00-290-4451
NSN 6220-01-552-0808
NSN 6145-00-988-8711
NSN 6150-01-085-4364