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 5925-01-076-4458
NSN 5960-01-003-8480
NSN 6650-01-284-4364
NSN 6685-01-621-5953
NSN 5935-00-179-7070
NSN 5930-01-339-5081
NSN 5835-01-370-8912
NSN 6645-00-767-6307
NSN 5920-01-199-5522
NSN 6610-01-308-6148
NSN 6220-00-964-1042
NSN 7035-01-571-7504