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 6135-00-309-0074
NSN 6320-00-456-0836
NSN 6620-01-383-7519
NSN 6645-01-056-5291
NSN 5855-00-494-9581
NSN 5985-01-204-9040
NSN 6610-01-633-8931
NSN 5985-01-660-4323
NSN 7035-00-585-2113
NSN 6220-01-327-3272
NSN 6130-01-076-5968
NSN 5855-01-020-7982