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 5855-01-455-8024
NSN 4140-01-210-4233
NSN 2925-01-043-9786
NSN 5990-01-015-7502
NSN 6620-01-374-5787
NSN 6220-01-024-9444
NSN 5950-00-046-5589
NSN 6685-00-659-7831
NSN 6105-00-064-7523
NSN 6610-01-215-4857
NSN 6650-00-789-8179
NSN 6145-01-327-3328