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 6620-01-225-4996
NSN 6320-00-070-4544
NSN 6645-01-535-7136
NSN 6645-01-259-4231
NSN 5990-01-026-8628
NSN 6650-00-445-6990
NSN 6110-01-456-1985
NSN 5925-01-182-7717
NSN 5915-01-391-4664
NSN 6145-01-468-5467
NSN 5996-00-063-2723
NSN 6105-01-085-6002