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 5925-01-150-6502
NSN 6685-01-656-8546
NSN 5998-01-285-8661
NSN 7035-01-538-7381
NSN 2925-00-105-3907
NSN 5835-00-071-5739
NSN 6685-00-030-7634
NSN 6620-00-456-0404
NSN 6610-01-265-0999
NSN 6650-01-279-2055
NSN 6105-01-535-5156
NSN 5990-00-110-1153