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 6105-00-255-5927
NSN 2925-00-008-5485
NSN 5915-01-579-7770
NSN 6320-01-543-1194
NSN 6650-01-066-0420
NSN 5975-01-406-4249
NSN 5910-01-023-8082
NSN 6135-00-112-8637
NSN 5990-00-902-7764
NSN 5835-00-892-3510
NSN 5965-01-326-9860
NSN 6220-01-211-7025