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 5985-01-385-4647
NSN 2925-01-058-1718
NSN 5965-00-170-5254
NSN 5945-00-248-6798
NSN 6650-00-449-8853
NSN 5895-01-020-4380
NSN 6685-00-446-2692
NSN 6685-00-273-7017
NSN 5855-01-272-3660
NSN 5930-00-409-4048
NSN 6620-00-578-5851
NSN 6105-01-322-4613