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 6145-01-192-6416
NSN 5996-01-621-7893
NSN 5930-00-877-6675
NSN 5895-01-384-6562
NSN 5935-00-399-7288
NSN 5965-01-519-8274
NSN 5910-00-470-0394
NSN 5960-00-160-9747
NSN 5855-00-925-0114
NSN 5945-01-204-7656
NSN 6145-01-586-9688
NSN 5950-00-864-3724