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 5975-01-107-5884
NSN 5965-01-577-8503
NSN 6105-01-375-3708
NSN 5895-01-492-3732
NSN 5975-01-444-4832
NSN 6145-00-472-9413
NSN 6135-01-167-7604
NSN 6110-01-605-1590
NSN 5990-00-369-5212
NSN 7035-01-607-1851
NSN 6320-01-190-1397
NSN 6135-01-528-6896