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 6685-00-807-3625
NSN 6105-00-842-0552
NSN 5985-01-338-6686
NSN 6150-00-925-2465
NSN 4140-00-876-9285
NSN 5996-01-124-2407
NSN 5985-00-446-1021
NSN 6220-01-371-3430
NSN 5920-01-190-6424
NSN 6685-01-228-5332
NSN 5975-00-081-5247
NSN 6110-01-539-7628