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 6135-00-182-7008
NSN 5935-00-446-8811
NSN 5996-01-346-7277
NSN 5835-01-048-8106
NSN 5950-00-086-8965
NSN 5945-00-296-8464
NSN 5905-01-226-6856
NSN 7035-00-043-1325
NSN 6685-01-469-9974
NSN 5945-00-843-4784
NSN 6645-01-015-9432
NSN 6645-00-663-8111