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 5985-01-634-0635
NSN 6645-01-086-7668
NSN 6145-00-082-5172
NSN 6150-00-099-0220
NSN 6110-00-196-8813
NSN 5905-00-839-7704
NSN 4140-00-238-6088
NSN 5930-01-455-6033
NSN 6110-00-627-7872
NSN 6610-01-512-2025
NSN 5920-01-212-9504
NSN 5835-01-013-9321