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 6645-01-648-2115
NSN 6130-01-575-2084
NSN 5945-01-089-8771
NSN 5930-00-577-4073
NSN 6320-00-977-3930
NSN 5950-01-094-5930
NSN 5895-01-410-7717
NSN 6110-01-091-3090
NSN 5930-00-989-2951
NSN 2925-01-181-3972
NSN 6645-00-809-3540
NSN 6135-01-643-3114