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 5895-00-232-9451
NSN 6320-01-250-0290
NSN 5990-00-542-3881
NSN 6620-01-202-4706
NSN 5915-01-531-1149
NSN 5998-00-564-2037
NSN 5999-00-905-8509
NSN 6150-01-304-9116
NSN 5935-00-526-0190
NSN 5920-00-977-7376
NSN 5895-01-384-2794
NSN 5925-00-137-6582