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 5895-00-408-0398
NSN 5960-01-495-0859
NSN 5915-01-356-4195
NSN 5915-01-388-1341
NSN 5835-01-286-6499
NSN 5935-00-122-8669
NSN 5915-01-465-3184
NSN 5895-00-475-9263
NSN 6620-01-355-4339
NSN 6220-01-534-4667
NSN 6645-00-114-2678
NSN 5985-00-151-3981