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 6610-01-445-9580
NSN 5985-01-394-8401
NSN 6645-00-189-7075
NSN 6650-01-323-2141
NSN 5996-01-271-1542
NSN 6685-01-200-7617
NSN 5996-01-640-6852
NSN 6610-00-058-0900
NSN 5925-00-893-8566
NSN 5999-01-024-6927
NSN 5960-00-728-3459
NSN 6645-00-032-5730