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 6105-01-442-7305
NSN 5930-01-339-1832
NSN 6620-00-658-6588
NSN 6650-01-137-7450
NSN 5985-01-098-7089
NSN 4140-01-473-4758
NSN 4140-00-575-1161
NSN 6240-01-437-8991
NSN 6685-00-842-8729
NSN 6135-01-131-9352
NSN 6620-00-663-8962
NSN 5975-00-246-4347