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 5950-01-439-9543
NSN 6650-00-857-2260
NSN 6145-01-160-7658
NSN 6650-00-963-1692
NSN 5950-00-801-1525
NSN 5920-01-029-8496
NSN 5996-01-412-1396
NSN 5985-01-298-7399
NSN 6130-01-444-1371
NSN 6610-01-474-5206
NSN 5990-00-320-1927
NSN 6220-01-484-7931