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 6135-00-152-8729
NSN 6610-01-382-1936
NSN 6150-01-620-0405
NSN 6645-00-295-8535
NSN 5985-00-698-2082
NSN 5950-01-361-8863
NSN 6240-00-683-0725
NSN 6620-01-597-0512
NSN 6320-00-405-2348
NSN 6320-01-166-3602
NSN 5996-01-522-3641
NSN 5990-00-756-6059