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 5985-01-187-5415
NSN 6220-01-419-3980
NSN 7035-01-609-0515
NSN 6105-01-555-8479
NSN 5996-01-414-5167
NSN 6105-00-309-4586
NSN 6620-01-550-8573
NSN 5975-00-922-5480
NSN 6135-00-826-4798
NSN 6220-01-154-7699
NSN 6240-00-991-6929
NSN 6110-00-976-3361