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 5855-01-100-3272
NSN 6220-01-494-7917
NSN 5996-01-620-4181
NSN 5935-01-343-9410
NSN 6320-00-089-9426
NSN 2925-01-226-6126
NSN 2925-00-853-5039
NSN 6645-01-461-3581
NSN 4140-01-586-2210
NSN 5910-00-097-9546
NSN 6645-01-268-0544
NSN 5910-01-100-8109