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 5985-00-987-9739
NSN 6145-00-042-3800
NSN 6685-00-409-4970
NSN 5985-01-475-3590
NSN 2925-01-359-4027
NSN 5935-01-270-6765
NSN 5895-00-153-2595
NSN 5930-01-337-0949
NSN 5985-01-021-4687
NSN 7035-01-576-9617
NSN 5999-01-076-4206
NSN 5999-00-794-4983