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 6610-00-661-1797
NSN 5999-00-584-4577
NSN 6220-00-489-0659
NSN 6685-01-653-5477
NSN 6135-00-767-0331
NSN 6130-01-067-0251
NSN 6610-00-140-1719
NSN 5935-00-503-2695
NSN 6150-01-542-8236
NSN 5950-00-212-4904
NSN 5996-00-688-9082
NSN 6650-00-170-5095