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 6610-01-521-4974
NSN 5999-00-912-0540
NSN 5996-00-977-5908
NSN 6145-01-493-4057
NSN 5965-01-236-4076
NSN 5905-01-055-9199
NSN 5985-00-959-7190
NSN 5965-01-216-1994
NSN 6650-01-143-4586
NSN 6645-01-456-5011
NSN 5915-00-080-4606
NSN 6320-00-521-9350