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 6150-01-197-6239
NSN 4140-01-418-4155
NSN 6145-01-570-1495
NSN 6240-01-415-5149
NSN 6685-00-054-6713
NSN 6650-01-321-7782
NSN 6645-01-455-8342
NSN 5910-01-426-8741
NSN 5925-00-512-9020
NSN 5945-01-508-4228
NSN 5910-01-212-7852
NSN 5985-00-976-2391