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 6610-01-425-6960
NSN 6105-00-183-4358
NSN 5985-01-202-0200
NSN 5950-00-174-5767
NSN 5835-00-419-0575
NSN 6220-01-367-5537
NSN 5930-00-080-8224
NSN 7035-01-128-7431
NSN 6145-01-424-0354
NSN 5935-01-033-4995
NSN 6240-01-645-0849
NSN 5925-01-535-3600