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 6610-00-276-1716
NSN 5920-01-418-3450
NSN 5915-01-382-9383
NSN 5965-00-182-7928
NSN 5985-01-123-4804
NSN 5996-01-497-0749
NSN 4140-01-241-7870
NSN 5935-01-071-0427
NSN 5925-01-044-5508
NSN 6240-01-424-6237
NSN 5999-00-265-6541
NSN 5945-01-413-7911