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 5935-01-281-8424
NSN 2925-00-081-6835
NSN 6110-01-422-7491
NSN 6220-00-077-3162
NSN 6320-00-831-2227
NSN 5920-00-702-5043
NSN 6145-01-035-5528
NSN 5835-01-386-4027
NSN 5910-01-657-9795
NSN 5999-01-584-7183
NSN 6130-01-170-4059
NSN 5945-01-309-4057