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 6320-01-166-3602
NSN 5965-01-041-8139
NSN 6240-01-143-5523
NSN 7035-00-079-7189
NSN 5935-01-525-7711
NSN 5905-01-255-1002
NSN 6135-01-526-0144
NSN 2925-00-156-4495
NSN 6130-00-454-8342
NSN 5925-01-414-6866
NSN 5905-01-393-8239
NSN 5910-00-430-8631