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 5905-01-593-9970
NSN 5998-01-378-9804
NSN 6650-01-463-8405
NSN 4140-01-296-9641
NSN 2925-01-444-2061
NSN 5930-01-433-7340
NSN 6130-00-738-3588
NSN 5835-00-863-6025
NSN 5835-01-441-4746
NSN 5996-01-118-9475
NSN 5975-00-093-8196
NSN 6620-01-352-5640