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 5835-00-445-5539
NSN 6645-01-435-8356
NSN 5920-01-525-0874
NSN 2925-01-425-7087
NSN 6620-00-008-3280
NSN 6135-00-437-5182
NSN 5996-01-568-9491
NSN 6135-00-777-5562
NSN 6145-01-044-5278
NSN 6135-00-660-8654
NSN 2925-00-284-1534
NSN 5835-00-833-7080