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 6150-00-233-6356
NSN 5975-01-185-5249
NSN 6240-01-041-7477
NSN 5920-01-087-9840
NSN 5950-01-104-5239
NSN 6240-00-087-0226
NSN 6220-01-466-0447
NSN 5975-00-621-6327
NSN 5915-00-141-0410
NSN 6135-01-424-8130
NSN 5925-00-466-7308
NSN 6240-00-299-9819