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 5999-01-469-6142
NSN 6150-00-201-9583
NSN 5975-01-012-2591
NSN 5895-01-187-8281
NSN 4140-01-003-2501
NSN 5905-00-783-8331
NSN 5975-00-888-4661
NSN 6320-01-445-5893
NSN 6150-01-105-4660
NSN 2925-01-139-5144
NSN 5950-01-570-0426
NSN 5920-01-611-9281