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 5910-00-762-8165
NSN 5925-00-170-4090
NSN 6135-01-062-5420
NSN 5990-01-009-1422
NSN 5990-01-303-9920
NSN 6135-01-500-0572
NSN 7035-01-378-5074
NSN 5910-00-453-9517
NSN 6220-00-807-3432
NSN 5835-01-381-2683
NSN 5945-00-405-9345
NSN 6610-01-085-2072