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 5975-01-341-7364
NSN 5999-00-529-0157
NSN 6610-00-244-6094
NSN 5855-01-378-1888
NSN 5925-01-470-4218
NSN 5996-01-332-6988
NSN 6145-01-595-5171
NSN 5905-00-419-0679
NSN 5975-01-192-5204
NSN 6610-01-512-2025
NSN 5910-01-396-6948
NSN 5855-01-443-3970