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 6130-01-106-3649
NSN 7035-01-253-2868
NSN 6150-01-224-7150
NSN 6610-01-066-4664
NSN 6610-00-225-9886
NSN 6645-00-975-6941
NSN 6135-01-423-7502
NSN 5905-01-403-2806
NSN 5960-00-998-4324
NSN 6145-01-576-7848
NSN 5960-01-449-1310
NSN 7035-01-510-8787