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 6650-01-022-5181
NSN 6150-01-620-2576
NSN 4140-01-426-8428
NSN 6110-01-081-8598
NSN 4140-01-645-5625
NSN 6145-01-417-6482
NSN 5905-00-827-1860
NSN 6645-01-170-5402
NSN 7035-01-089-4485
NSN 6650-01-347-2291
NSN 6150-01-514-2541
NSN 5910-00-584-6484