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 6610-00-757-6060
NSN 6650-00-287-5868
NSN 2925-01-113-6904
NSN 6135-00-221-4720
NSN 5930-01-381-6277
NSN 5960-01-261-6753
NSN 5975-01-539-0286
NSN 5910-00-242-6076
NSN 6105-00-931-8036
NSN 5965-00-557-3816
NSN 5910-00-193-0602
NSN 5985-01-421-4559