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 6320-01-578-6006
NSN 6240-01-584-6774
NSN 5905-01-591-1034
NSN 5835-01-295-2431
NSN 5855-01-046-7273
NSN 6220-00-397-3335
NSN 6220-01-467-9608
NSN 5835-01-090-0784
NSN 5920-01-202-5948
NSN 5975-01-396-0947
NSN 6130-01-445-7994
NSN 6130-01-137-5712