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 5990-01-548-5979
NSN 5910-01-025-1247
NSN 6685-01-643-9535
NSN 6135-00-738-5571
NSN 5925-01-048-4889
NSN 5985-00-017-2114
NSN 5975-00-039-6315
NSN 5910-00-126-1866
NSN 5925-00-485-9175
NSN 5985-01-527-1759
NSN 6685-00-098-6500
NSN 6130-00-100-0175