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 5975-01-534-3024
NSN 5990-01-411-5930
NSN 6150-00-789-7737
NSN 5905-01-016-7812
NSN 5960-01-573-6483
NSN 5985-01-107-7835
NSN 6650-00-955-2802
NSN 5999-01-062-9116
NSN 5925-01-464-2734
NSN 6135-00-708-0892
NSN 6145-01-336-4283
NSN 6240-00-237-7878