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 5975-01-372-8691
NSN 5930-01-571-8762
NSN 6110-00-161-4115
NSN 6110-01-371-1978
NSN 6685-00-051-4845
NSN 5930-01-042-0148
NSN 5990-01-438-8228
NSN 5985-00-481-8394
NSN 5965-01-537-0023
NSN 5999-00-240-6594
NSN 6130-01-498-8878
NSN 5965-00-455-7581