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 6240-01-490-6357
NSN 5945-00-108-5445
NSN 6685-00-412-3323
NSN 5996-01-406-1821
NSN 6145-01-399-8414
NSN 5925-00-578-4774
NSN 5915-00-462-0847
NSN 5920-00-629-0442
NSN 5925-01-342-5706
NSN 5990-00-483-6623
NSN 6220-00-452-5308
NSN 6110-00-893-9802