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 6645-00-192-1152
NSN 6135-01-344-2442
NSN 5930-01-372-5210
NSN 6645-00-726-2716
NSN 5925-01-128-3262
NSN 5895-00-943-0430
NSN 5930-00-915-5874
NSN 6685-01-314-0555
NSN 6145-00-840-5290
NSN 2925-01-255-3534
NSN 5975-01-435-4604
NSN 5920-01-267-2795