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 6220-00-762-8944
NSN 5910-01-193-1497
NSN 5895-01-281-5040
NSN 5910-00-681-7770
NSN 5950-01-339-8209
NSN 5999-00-339-3005
NSN 6240-01-633-9357
NSN 6620-01-011-3449
NSN 5975-01-519-2470
NSN 6105-01-648-2644
NSN 5855-01-103-8650
NSN 6685-00-177-6491