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 5965-01-078-1312
NSN 5910-00-450-0199
NSN 2925-01-497-7055
NSN 5920-00-584-4592
NSN 5990-01-531-5962
NSN 6220-01-508-5053
NSN 2925-01-027-1293
NSN 5975-01-351-9034
NSN 5996-01-281-7336
NSN 5965-01-248-7231
NSN 5930-01-620-5636
NSN 6110-00-407-6829