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 5910-01-607-2647
NSN 5925-00-081-9135
NSN 7035-01-158-7673
NSN 5996-00-201-8861
NSN 5990-01-581-5103
NSN 6150-00-360-1508
NSN 5975-00-070-9553
NSN 5915-01-561-3227
NSN 5996-01-393-1101
NSN 5910-01-444-1429
NSN 5855-00-361-0167
NSN 5905-00-986-1593