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 6610-00-982-2778
NSN 5930-00-058-9592
NSN 5835-00-494-8419
NSN 5935-00-455-9595
NSN 6650-01-213-0561
NSN 6110-01-511-0201
NSN 6240-00-560-5426
NSN 5990-00-620-1137
NSN 5998-01-202-1963
NSN 6110-01-449-7144
NSN 6145-01-540-2026
NSN 5910-01-114-0636