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 6320-00-553-8427
NSN 5975-00-304-5019
NSN 6150-01-469-6398
NSN 5998-01-449-4136
NSN 5895-00-730-3970
NSN 6135-00-660-8654
NSN 5855-01-103-8650
NSN 6220-00-828-4209
NSN 7035-00-403-5340
NSN 5965-01-630-7647
NSN 6650-00-684-3060
NSN 5985-00-992-9551