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 6610-01-268-8456
NSN 5990-01-285-1868
NSN 6620-00-172-9222
NSN 6645-01-607-9104
NSN 5985-01-455-4489
NSN 5950-01-646-3932
NSN 5990-01-602-6701
NSN 5915-01-158-5602
NSN 5905-01-462-4706
NSN 6110-00-973-4501
NSN 5895-01-342-4551
NSN 6220-01-607-6220