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 6685-00-306-5604
NSN 5925-01-533-8793
NSN 5855-00-631-4565
NSN 5835-00-170-5238
NSN 6320-00-433-2773
NSN 2925-01-519-3221
NSN 5925-01-497-1180
NSN 5920-01-529-6525
NSN 5905-00-813-2280
NSN 6240-01-500-2152
NSN 6610-01-316-8902
NSN 6645-01-431-4545