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 6150-00-928-4961
NSN 4140-01-339-0090
NSN 6650-01-415-3332
NSN 6150-01-423-9750
NSN 5965-01-315-5764
NSN 6240-00-372-4841
NSN 6110-00-138-6691
NSN 7035-01-265-0216
NSN 5985-00-117-9832
NSN 5985-01-503-5859
NSN 5920-01-014-3939
NSN 5998-01-312-3184