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 6130-00-557-8486
NSN 6650-00-144-4555
NSN 6620-01-030-9460
NSN 5920-01-267-8174
NSN 2925-01-282-3206
NSN 6105-00-160-7804
NSN 7035-01-577-8659
NSN 5915-01-343-8389
NSN 5950-01-335-8954
NSN 6685-00-228-6983
NSN 5925-01-588-1762
NSN 5996-01-293-1237