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 6620-01-207-0667
NSN 5855-01-487-5048
NSN 6150-01-131-6301
NSN 5905-01-156-1517
NSN 5910-01-100-4907
NSN 5935-00-522-5247
NSN 5960-00-726-0580
NSN 4140-01-407-9668
NSN 6105-01-067-0015
NSN 5925-01-647-6579
NSN 6150-01-462-3775
NSN 5925-01-189-5292