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 6685-01-113-5350
NSN 6610-00-165-5838
NSN 4140-00-385-2925
NSN 5985-01-254-6293
NSN 5950-00-145-5973
NSN 5999-01-020-7641
NSN 5985-01-555-9165
NSN 6110-01-011-5240
NSN 4140-01-132-0093
NSN 6650-00-126-3002
NSN 6650-00-020-6966
NSN 6620-01-580-0883