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 6135-01-408-9244
NSN 5910-01-270-6711
NSN 5975-01-497-1501
NSN 5996-01-398-0037
NSN 5998-01-209-6715
NSN 5910-01-372-7118
NSN 6130-01-313-7109
NSN 2925-01-625-6841
NSN 5905-00-070-2266
NSN 6620-01-038-7468
NSN 6145-01-401-3713
NSN 6320-00-036-3688