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 5855-01-145-8973
NSN 5998-01-454-4417
NSN 6685-00-020-9793
NSN 5985-00-274-2851
NSN 5960-01-222-4199
NSN 5895-00-113-4647
NSN 6620-01-274-3423
NSN 6320-00-925-0558
NSN 6645-01-463-4314
NSN 7035-00-455-7666
NSN 5930-01-147-1422
NSN 5905-01-165-0668