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 5920-01-595-9534
NSN 5925-00-554-4114
NSN 5855-01-027-8414
NSN 5935-00-217-8366
NSN 6130-01-135-0004
NSN 6220-01-617-4838
NSN 6645-01-471-4960
NSN 5999-01-188-7225
NSN 5990-01-650-9034
NSN 5999-01-202-8282
NSN 5855-00-879-0546
NSN 6220-01-539-5242