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 5925-01-484-1167
NSN 6145-01-367-9359
NSN 5935-01-601-7507
NSN 5915-01-412-2112
NSN 5999-01-195-7261
NSN 6220-01-131-2377
NSN 5925-01-458-8262
NSN 5975-00-175-6696
NSN 6110-01-067-7677
NSN 5985-01-375-4921
NSN 5996-01-445-5528
NSN 7035-01-285-4473