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 5930-00-930-8384
NSN 5925-00-194-9146
NSN 5895-01-236-7929
NSN 6130-00-514-1177
NSN 4140-01-190-2464
NSN 4140-01-500-8094
NSN 5935-00-270-4160
NSN 5915-01-176-7004
NSN 5975-01-552-2441
NSN 6685-00-082-3153
NSN 5996-01-317-5024
NSN 6220-01-401-5337