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 5930-01-087-7919
NSN 6110-00-111-2761
NSN 6105-01-519-8003
NSN 6220-01-419-4954
NSN 6650-01-027-1181
NSN 6130-00-232-5321
NSN 6685-01-203-1034
NSN 5855-00-014-5008
NSN 6130-01-509-9724
NSN 6145-01-178-2626
NSN 2925-00-234-7918
NSN 5905-00-353-1659