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 5905-01-627-7011
NSN 5895-00-665-3991
NSN 5895-00-939-7479
NSN 6685-01-067-9370
NSN 5835-00-770-2843
NSN 6645-01-553-1975
NSN 5998-01-510-8435
NSN 5945-01-113-6828
NSN 5945-00-552-6627
NSN 6650-01-613-3642
NSN 6145-00-943-9549
NSN 5990-00-476-4336