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 6645-00-116-1409
NSN 5835-00-958-6231
NSN 6620-01-112-6440
NSN 5925-00-071-9844
NSN 5935-01-519-9154
NSN 6610-01-548-3401
NSN 5965-01-569-3332
NSN 5990-01-302-3733
NSN 5935-01-146-9647
NSN 6320-01-229-6479
NSN 5835-00-366-0240
NSN 5960-00-708-7131