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 6130-00-606-5130
NSN 6145-01-256-9297
NSN 5925-01-464-2734
NSN 5910-01-025-9060
NSN 6150-01-192-3892
NSN 5920-01-178-9581
NSN 4140-01-543-7262
NSN 6610-00-480-6633
NSN 6645-01-470-7246
NSN 5910-00-243-9425
NSN 5835-00-236-8760
NSN 7035-01-487-6481