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 6110-01-415-5086
NSN 5915-00-469-3492
NSN 5915-01-398-9831
NSN 6110-00-958-3794
NSN 5925-01-433-5323
NSN 2925-00-806-7972
NSN 5905-01-068-3631
NSN 5915-00-076-2603
NSN 5935-00-160-2471
NSN 5905-00-633-8370
NSN 6620-01-571-7727
NSN 5910-01-529-0858