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 5920-01-599-9293
NSN 5905-01-442-2279
NSN 6320-01-415-0953
NSN 5905-01-397-2589
NSN 2925-00-934-8383
NSN 5985-01-465-4732
NSN 5905-01-145-1409
NSN 5945-00-201-4201
NSN 6240-00-372-4841
NSN 7035-01-187-6002
NSN 5855-01-085-5354
NSN 6320-01-525-4789