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 6220-01-073-7222
NSN 6620-00-337-5610
NSN 6145-01-296-9856
NSN 5965-00-807-9159
NSN 5975-01-495-8285
NSN 5925-01-462-5638
NSN 5960-00-732-0989
NSN 2925-00-542-8285
NSN 5920-00-722-4894
NSN 5920-01-373-0019
NSN 5835-00-711-3371
NSN 5855-01-111-3962