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 5965-00-332-8698
NSN 6610-01-147-9072
NSN 4140-01-518-8170
NSN 5999-00-851-2856
NSN 5935-00-679-9663
NSN 5999-00-940-8807
NSN 6130-00-528-7838
NSN 5996-00-613-1761
NSN 6320-01-342-5195
NSN 5855-00-494-9581
NSN 6145-00-719-7395
NSN 5905-01-381-9460