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 5920-01-362-5183
NSN 6145-01-167-6564
NSN 6135-01-139-1700
NSN 5920-01-578-0665
NSN 5835-01-286-6499
NSN 5915-01-047-2075
NSN 6610-00-449-2703
NSN 5905-01-575-4166
NSN 6320-00-831-2227
NSN 5905-00-168-9319
NSN 5915-01-296-2204
NSN 6135-01-168-2944