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 5996-01-033-8371
NSN 5910-01-246-3717
NSN 5915-01-222-5995
NSN 5915-01-461-2425
NSN 6130-01-585-9233
NSN 5990-01-100-1840
NSN 5935-00-900-3373
NSN 5910-00-837-5627
NSN 5935-01-212-9631
NSN 5998-01-293-3730
NSN 6620-00-678-1935
NSN 6220-01-298-9242