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 5950-00-400-9104
NSN 5855-01-283-0050
NSN 5855-00-411-8688
NSN 5975-00-541-8531
NSN 5999-01-244-7596
NSN 5990-01-529-7307
NSN 6645-01-575-2297
NSN 6135-01-573-2428
NSN 5998-00-301-3845
NSN 5855-01-027-3639
NSN 5905-00-964-6097
NSN 6145-01-302-8157