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 5910-00-456-9652
NSN 6150-01-174-2982
NSN 5996-01-493-9908
NSN 6110-00-288-4179
NSN 5915-01-258-7435
NSN 5975-00-419-9812
NSN 6320-00-779-5923
NSN 5895-01-384-4461
NSN 6220-00-460-4770
NSN 5996-01-204-0675
NSN 5925-00-283-1400
NSN 6610-01-400-3880