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 5930-01-195-4846
NSN 5998-00-106-6181
NSN 6650-01-212-3964
NSN 5935-00-156-3697
NSN 6105-01-371-3045
NSN 5905-01-543-2797
NSN 2925-00-845-1480
NSN 5895-00-460-3707
NSN 5910-01-444-1429
NSN 6685-01-271-5058
NSN 6645-01-307-4096
NSN 6130-00-396-1118