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 5895-00-111-1560
NSN 6110-01-252-3876
NSN 6220-01-035-1759
NSN 5925-00-584-7189
NSN 2925-01-327-3069
NSN 5960-00-978-7435
NSN 5990-01-388-0252
NSN 5975-00-135-7892
NSN 6110-01-192-1800
NSN 6150-00-231-9434
NSN 5960-00-231-3767
NSN 5935-00-481-9325