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 5905-00-431-0637
NSN 5965-00-255-3889
NSN 5930-00-057-9921
NSN 6105-01-190-5434
NSN 6105-01-659-8170
NSN 6610-01-354-3087
NSN 2925-01-197-7864
NSN 5985-01-204-6293
NSN 5925-01-617-0364
NSN 4140-01-272-8091
NSN 5975-00-607-8587
NSN 5950-01-254-4485