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 5998-01-252-3046
NSN 5950-00-287-9795
NSN 5990-00-174-6695
NSN 5925-01-383-1463
NSN 6135-00-078-9931
NSN 6320-01-378-6191
NSN 6145-00-487-9575
NSN 6685-00-398-0341
NSN 5985-00-533-0659
NSN 6145-01-256-5965
NSN 6685-01-519-3280
NSN 5990-00-269-2226