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 6320-01-362-9518
NSN 4140-01-097-2008
NSN 4140-00-423-6663
NSN 6130-01-408-8208
NSN 2925-01-399-2765
NSN 5985-00-551-3244
NSN 6135-00-321-6707
NSN 5985-00-104-8289
NSN 5985-00-111-1605
NSN 4140-01-431-9065
NSN 6650-01-059-2609
NSN 6685-00-153-3914