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 5910-00-432-9371
NSN 5835-00-451-2982
NSN 5985-01-028-3089
NSN 5895-00-505-7453
NSN 5985-01-004-9716
NSN 6105-01-014-7222
NSN 6220-01-601-7445
NSN 6685-00-496-4136
NSN 6105-01-344-4563
NSN 5930-00-910-4138
NSN 6105-01-560-7802
NSN 5975-00-660-5962