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 5990-01-124-9063
NSN 5990-01-478-8638
NSN 6110-00-474-5137
NSN 6610-01-025-2876
NSN 6620-01-299-8949
NSN 6110-00-652-0095
NSN 6130-01-246-7617
NSN 6220-01-463-3339
NSN 6105-01-233-0159
NSN 5990-00-038-0695
NSN 2925-01-444-6676
NSN 5985-00-470-8373