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 6610-01-327-3187
NSN 5975-01-543-1583
NSN 5930-01-437-6812
NSN 6650-01-096-6803
NSN 5960-00-433-8520
NSN 5935-01-424-5146
NSN 6110-01-473-2492
NSN 5990-01-198-7953
NSN 5996-00-819-8819
NSN 5895-01-555-7539
NSN 5975-01-056-5514
NSN 6650-01-088-5199