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 5990-00-409-3594
NSN 6610-00-267-9944
NSN 6685-00-166-0761
NSN 5925-01-659-1705
NSN 5905-01-023-1732
NSN 5935-00-297-8846
NSN 6620-00-229-2728
NSN 6135-00-228-8140
NSN 6645-00-479-9334
NSN 6645-01-363-2519
NSN 5975-01-095-0387
NSN 5990-00-406-4991