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 5975-01-560-6928
NSN 5985-00-218-1356
NSN 6650-00-555-1061
NSN 6645-01-525-5181
NSN 5975-01-657-7898
NSN 6240-01-502-1211
NSN 2925-01-333-6346
NSN 5920-01-505-5601
NSN 6220-00-510-7899
NSN 6645-01-441-0937
NSN 5996-00-428-8130
NSN 6150-00-053-0795