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 2925-00-120-9302
NSN 5945-01-327-4646
NSN 4140-00-190-0162
NSN 5920-01-063-6499
NSN 6645-01-534-5545
NSN 5990-00-285-1948
NSN 5985-01-619-2817
NSN 6320-01-343-8191
NSN 5935-01-222-1660
NSN 6610-01-461-8180
NSN 6135-00-161-0746
NSN 5920-01-133-5286