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 5910-00-169-4056
NSN 5965-00-959-4910
NSN 5945-01-517-3635
NSN 6135-00-477-8847
NSN 6620-01-545-9837
NSN 6645-00-315-9254
NSN 6130-01-145-5846
NSN 7035-01-519-6779
NSN 2925-00-881-3770
NSN 6130-00-839-1176
NSN 6150-01-239-4565
NSN 5996-01-416-1489