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 6240-01-286-3200
NSN 6610-00-829-5411
NSN 6685-01-565-9049
NSN 5999-01-510-8567
NSN 6685-01-072-1955
NSN 6150-00-133-5200
NSN 6145-00-423-1563
NSN 5930-01-393-4468
NSN 5905-01-331-3103
NSN 7035-01-648-6348
NSN 5965-00-220-6900
NSN 6645-01-341-0632