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 5910-00-100-5784
NSN 5996-01-171-2132
NSN 5920-00-127-9992
NSN 5985-01-629-4493
NSN 5998-01-273-9296
NSN 5895-01-575-9288
NSN 6150-00-624-3201
NSN 6150-00-217-7198
NSN 5950-01-043-9997
NSN 6240-01-009-0363
NSN 5855-01-354-3463
NSN 6220-01-025-0482