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 6320-01-201-2776
NSN 5915-01-623-3152
NSN 5920-00-815-0529
NSN 6130-01-255-7990
NSN 5996-01-517-1603
NSN 6685-00-056-9839
NSN 5905-01-327-2712
NSN 5930-01-423-7542
NSN 6240-01-327-4945
NSN 5905-00-026-0162
NSN 6240-01-154-6840
NSN 6110-00-139-5693