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 6620-01-278-8028
NSN 5905-00-147-1620
NSN 2925-01-571-9985
NSN 5996-01-339-7539
NSN 5855-01-332-7594
NSN 5910-00-223-3137
NSN 6620-01-578-7561
NSN 5985-01-260-1475
NSN 5985-00-734-5506
NSN 5915-01-478-2772
NSN 6685-01-451-7001
NSN 5999-00-712-0073