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 5945-00-184-8721
NSN 6150-00-643-4180
NSN 6685-01-432-0265
NSN 5925-01-424-1710
NSN 2925-01-344-0281
NSN 6135-01-626-2645
NSN 5895-01-649-7336
NSN 6145-00-964-7466
NSN 6145-01-627-7138
NSN 6105-01-609-3363
NSN 5975-00-175-6696
NSN 6685-00-008-7979