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 5930-01-536-9935
NSN 6650-01-628-3745
NSN 6650-01-003-9355
NSN 5985-01-423-7290
NSN 6150-01-222-8252
NSN 6620-01-222-8820
NSN 5998-01-634-0604
NSN 5910-00-839-8196
NSN 4140-01-268-2429
NSN 6130-01-548-7624
NSN 5920-00-314-6870
NSN 2925-01-131-4531