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 2925-01-421-0068
NSN 2925-00-059-7991
NSN 6240-00-739-0961
NSN 6220-00-284-3220
NSN 5945-01-029-5073
NSN 6105-01-013-6486
NSN 5905-01-316-3249
NSN 5935-00-891-9802
NSN 5910-01-608-7502
NSN 6110-00-025-9003
NSN 2925-01-579-1010
NSN 6105-01-522-9244