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 4140-00-915-6125
NSN 6620-00-135-9338
NSN 2925-01-091-4734
NSN 5965-01-542-3102
NSN 6105-01-237-6090
NSN 6645-00-736-0476
NSN 6220-01-551-9395
NSN 5950-01-634-0677
NSN 5835-01-251-4945
NSN 5985-01-443-8558
NSN 5895-01-555-3086
NSN 5930-01-551-2074