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 5998-01-132-8300
NSN 5945-01-410-8181
NSN 5950-00-100-1345
NSN 5905-01-418-6332
NSN 5930-01-215-1168
NSN 5990-00-269-2226
NSN 6645-01-289-2950
NSN 6150-00-927-5936
NSN 2925-01-243-0328
NSN 6105-01-390-0873
NSN 6645-00-940-0774
NSN 5930-01-500-4004