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 5998-00-403-0527
NSN 5999-01-190-2417
NSN 5920-00-308-9743
NSN 5990-01-442-3520
NSN 5915-00-078-9574
NSN 5996-00-403-3753
NSN 6620-00-841-0346
NSN 5920-01-069-2992
NSN 6220-01-443-5310
NSN 5895-01-320-4458
NSN 6685-01-463-8461
NSN 5999-00-892-8728