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 6320-01-227-2648
NSN 6650-00-923-4192
NSN 2925-01-633-4048
NSN 5895-01-026-9807
NSN 5990-00-658-3953
NSN 5950-01-461-8783
NSN 5998-01-435-2677
NSN 5915-00-582-1499
NSN 5945-00-216-7432
NSN 5950-00-816-9913
NSN 6685-01-595-6905
NSN 5990-01-129-7701