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 6220-01-410-7555
NSN 6130-00-390-9718
NSN 5855-00-361-0167
NSN 5975-00-828-3505
NSN 6130-01-029-3601
NSN 6145-01-448-0832
NSN 5920-01-352-7223
NSN 6320-01-328-6575
NSN 7035-01-442-7947
NSN 2925-00-753-8598
NSN 4140-00-597-5260
NSN 5990-01-108-0436