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 5996-00-477-6603
NSN 2925-01-560-4123
NSN 5935-00-516-5251
NSN 6610-01-490-2020
NSN 5996-01-464-4276
NSN 5910-00-802-7555
NSN 5985-01-480-2621
NSN 6110-01-399-1176
NSN 6620-01-660-5908
NSN 7035-00-585-2113
NSN 5945-01-441-9370
NSN 6645-00-998-7820