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 6240-01-569-8709
NSN 5920-01-368-5415
NSN 5910-00-928-8194
NSN 6320-01-532-4026
NSN 5835-01-498-9410
NSN 6610-00-929-8968
NSN 7035-01-123-8723
NSN 6685-00-267-0938
NSN 5945-00-964-6354
NSN 7035-00-679-9027
NSN 2925-00-546-3129
NSN 5950-00-865-9584