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 6620-01-381-6225
NSN 6645-01-245-8390
NSN 5998-01-445-2815
NSN 5975-01-515-6218
NSN 6610-01-350-7697
NSN 6150-01-550-5556
NSN 5925-01-634-0664
NSN 5905-01-256-6721
NSN 6150-01-463-5883
NSN 5935-01-026-0965
NSN 5985-00-134-5398
NSN 5925-00-153-4518