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 5965-01-498-4023
NSN 5975-01-141-6889
NSN 6320-01-160-7757
NSN 5895-00-684-6879
NSN 5895-01-400-1564
NSN 6145-01-072-3352
NSN 6150-01-239-3636
NSN 5998-00-203-1232
NSN 5910-00-383-9557
NSN 5975-00-702-8253
NSN 6620-01-535-6925
NSN 6610-01-371-3006