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 5975-01-279-1095
NSN 5965-01-123-3770
NSN 6240-01-180-3720
NSN 5996-01-472-2112
NSN 5985-01-486-6368
NSN 5999-01-108-6547
NSN 5990-01-116-2181
NSN 5998-00-917-8597
NSN 5965-01-603-0118
NSN 5960-01-010-3083
NSN 6650-01-298-4138
NSN 6645-01-550-6577