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 5990-01-458-1621
NSN 5935-01-282-3825
NSN 5855-01-398-4313
NSN 5910-01-229-5558
NSN 5965-01-337-8411
NSN 5996-01-059-6612
NSN 5895-00-236-3294
NSN 4140-01-100-7922
NSN 6685-01-430-1142
NSN 6645-00-009-4104
NSN 5930-00-412-5577
NSN 5975-01-514-9961