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 5920-01-196-7391
NSN 6110-01-436-9475
NSN 4140-01-025-4911
NSN 6645-00-654-1485
NSN 6685-01-385-4180
NSN 5950-01-010-5026
NSN 4140-00-078-9357
NSN 6610-00-284-3093
NSN 6240-00-239-8295
NSN 5990-00-339-2084
NSN 6110-01-044-4978
NSN 5945-01-032-6885