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 7035-01-375-3719
NSN 6220-01-103-4475
NSN 6130-00-408-5055
NSN 4140-01-356-6126
NSN 6145-01-156-5219
NSN 5930-01-102-0256
NSN 6685-01-440-8749
NSN 5950-00-144-3498
NSN 5965-01-033-9352
NSN 6150-01-283-3468
NSN 6320-01-349-8077
NSN 6320-00-894-1644