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 5935-01-249-3102
NSN 2925-01-179-7795
NSN 6145-01-534-2748
NSN 6130-00-825-7552
NSN 5999-00-401-8719
NSN 5930-01-627-5572
NSN 5985-00-644-5289
NSN 5960-00-878-9486
NSN 5998-01-553-6684
NSN 6645-01-010-3746
NSN 6145-01-626-5072
NSN 6685-00-453-9357