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 6685-01-496-8443
NSN 5990-01-200-7460
NSN 5930-01-324-9778
NSN 6130-01-109-1644
NSN 5855-00-912-3885
NSN 6145-00-871-2975
NSN 6110-01-259-3421
NSN 6320-01-466-4175
NSN 5910-00-186-7342
NSN 6620-00-237-9395
NSN 5945-01-212-9604
NSN 5985-01-508-1407