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 5920-01-529-9978
NSN 6610-01-204-9146
NSN 5998-00-414-1181
NSN 5915-01-064-7697
NSN 5895-01-032-9709
NSN 5905-01-392-1402
NSN 5915-01-044-5260
NSN 6685-00-432-8795
NSN 6130-01-435-7169
NSN 2925-01-191-9668
NSN 6610-01-076-4800
NSN 6110-00-247-0211