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 5895-00-739-4523
NSN 5965-01-018-2792
NSN 6240-01-476-7935
NSN 6145-01-389-3448
NSN 5965-00-735-9315
NSN 5835-01-096-8570
NSN 5905-00-516-0814
NSN 6110-01-588-1623
NSN 6610-00-764-6627
NSN 6220-01-632-3851
NSN 6320-01-631-7828
NSN 6240-01-509-1905