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 6110-01-392-6829
NSN 5945-01-020-2371
NSN 2925-01-025-0082
NSN 5945-00-412-2902
NSN 5996-00-789-5233
NSN 6645-00-269-8440
NSN 5996-00-737-0646
NSN 4140-01-327-3241
NSN 5905-00-555-1899
NSN 5960-01-399-4327
NSN 5975-01-218-7186
NSN 6135-01-268-7056