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 6130-01-090-0894
NSN 5985-01-558-3815
NSN 5915-00-760-3874
NSN 6320-01-578-6006
NSN 6130-00-692-2916
NSN 6320-00-405-2348
NSN 5965-00-160-3941
NSN 6620-01-422-9708
NSN 5950-00-204-8075
NSN 5990-00-900-4459
NSN 7035-00-455-7666
NSN 5925-01-620-3271