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 6610-00-315-9315
NSN 5910-00-731-1358
NSN 5920-01-032-4756
NSN 6610-01-024-5360
NSN 5996-00-683-5176
NSN 5950-00-312-2696
NSN 6240-01-463-8276
NSN 2925-00-652-7383
NSN 6620-01-024-1228
NSN 6130-01-242-9778
NSN 5985-01-062-0675
NSN 6685-01-421-4403