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 2925-00-678-5502
NSN 6650-01-158-5099
NSN 5998-00-215-0072
NSN 6645-00-922-8312
NSN 5996-00-172-7553
NSN 6685-01-190-8634
NSN 5990-00-093-6794
NSN 5985-00-823-5396
NSN 4140-00-004-9950
NSN 5965-01-342-2865
NSN 6685-01-620-0900
NSN 5835-00-617-3578