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 5910-00-276-8592
NSN 6220-01-571-0951
NSN 5905-01-130-6092
NSN 4140-01-606-6795
NSN 7035-01-438-2108
NSN 6645-00-754-4108
NSN 5999-01-244-2506
NSN 2925-01-327-3069
NSN 6220-01-181-3135
NSN 5905-01-398-8275
NSN 5855-01-604-9997
NSN 5950-00-163-2818