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 6645-00-171-9639
NSN 5998-01-396-2821
NSN 5999-01-343-3184
NSN 5895-01-032-4938
NSN 6620-00-854-5024
NSN 6110-01-074-9368
NSN 5990-01-658-9964
NSN 5985-01-620-3477
NSN 6130-01-395-3641
NSN 5965-00-752-5823
NSN 6620-01-093-1383
NSN 5985-00-451-4898