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 6150-00-922-5553
NSN 6685-01-611-3367
NSN 6620-00-170-5296
NSN 5985-01-417-9558
NSN 6220-00-358-9580
NSN 6320-01-512-2031
NSN 6135-01-296-1860
NSN 6110-00-862-3097
NSN 5920-01-606-5606
NSN 6135-00-087-5300
NSN 6110-01-415-2326
NSN 6150-00-424-6285