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 5930-00-693-1511
NSN 5965-00-378-3403
NSN 6320-01-449-1014
NSN 5930-01-380-3378
NSN 5905-01-646-6417
NSN 5945-01-656-7555
NSN 4140-01-627-2540
NSN 5905-01-613-4360
NSN 6110-00-218-4737
NSN 6240-00-212-4305
NSN 6685-00-415-0899
NSN 6320-01-250-0290