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 5985-00-267-5427
NSN 5895-01-323-7784
NSN 5996-01-156-9688
NSN 5950-01-212-0240
NSN 5990-00-125-5036
NSN 6135-01-142-2417
NSN 5930-00-059-7398
NSN 6650-01-399-8552
NSN 6130-00-153-3136
NSN 6150-00-108-6350
NSN 7035-00-849-5526
NSN 5905-00-638-6776