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 5930-01-280-1819
NSN 5950-00-174-1073
NSN 5930-01-384-4363
NSN 5975-01-519-6621
NSN 5895-00-493-0042
NSN 5925-01-570-3682
NSN 6135-00-577-8429
NSN 6145-01-581-1780
NSN 7035-00-463-7143
NSN 7035-01-326-8569
NSN 5910-00-792-8182
NSN 5950-01-387-4956