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 5960-01-457-7432
NSN 5935-00-269-5516
NSN 5925-01-442-3792
NSN 7035-01-098-4168
NSN 6610-01-009-6354
NSN 6130-01-209-9881
NSN 6110-01-039-7161
NSN 6110-00-967-4257
NSN 6620-01-275-9777
NSN 6145-01-427-9844
NSN 5920-01-401-5315
NSN 5905-00-436-7269