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 5999-00-895-4092
NSN 2925-01-230-8057
NSN 5905-01-314-6484
NSN 6110-00-821-5534
NSN 5950-01-470-6607
NSN 5990-01-328-9846
NSN 5915-01-579-6655
NSN 5985-00-259-8222
NSN 6110-00-728-4515
NSN 5945-01-510-3530
NSN 4140-01-415-1187
NSN 5930-01-249-5632