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 5905-00-661-2395
NSN 6105-00-225-5387
NSN 6645-01-595-7659
NSN 6685-01-337-5657
NSN 5910-01-250-1168
NSN 5960-01-614-8005
NSN 6645-01-144-2161
NSN 4140-01-541-7463
NSN 5996-01-080-4586
NSN 2925-01-467-1192
NSN 6220-00-622-3572
NSN 5925-00-137-4814