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 6620-01-464-6762
NSN 5905-00-769-5455
NSN 5905-00-705-4067
NSN 6135-01-128-5358
NSN 6620-01-004-7072
NSN 5945-01-105-8510
NSN 6650-01-386-5787
NSN 5915-01-444-9647
NSN 6685-01-030-8307
NSN 5990-01-551-9506
NSN 5920-01-446-9390
NSN 5905-00-088-9125