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 2925-01-218-5556
NSN 2925-01-348-5518
NSN 6220-00-378-1484
NSN 5999-01-010-3494
NSN 5905-01-217-1760
NSN 6105-01-129-3832
NSN 6240-01-390-6996
NSN 6110-01-394-5302
NSN 6105-00-381-5795
NSN 5960-00-983-3317
NSN 5975-00-404-2513
NSN 6145-01-617-7967