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 6145-01-197-8488
NSN 6150-01-330-2444
NSN 6685-00-178-9575
NSN 4140-01-487-5453
NSN 5985-00-549-5973
NSN 5930-01-367-6355
NSN 6145-01-634-0388
NSN 5925-01-658-5317
NSN 4140-00-148-7013
NSN 6645-01-050-5221
NSN 6320-01-346-5158
NSN 5930-01-616-4332