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 6645-00-204-4100
NSN 6145-01-412-8111
NSN 6685-01-250-2669
NSN 5990-01-042-1984
NSN 6220-00-528-7752
NSN 6130-01-088-6693
NSN 5925-01-076-3994
NSN 5935-01-608-1295
NSN 6220-00-533-3936
NSN 7035-01-396-3343
NSN 6150-01-210-7298
NSN 6135-01-247-5660