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 6110-01-179-3669
NSN 6220-01-434-7506
NSN 6130-01-451-3810
NSN 5960-01-096-3464
NSN 6135-00-973-5632
NSN 2925-01-140-7614
NSN 5950-00-294-4919
NSN 5905-01-027-2086
NSN 5895-00-984-8994
NSN 5935-01-341-9687
NSN 6110-01-485-0276
NSN 5950-01-421-0304